Our Lady in Medjugorje tells you how you can replace fasting

Message dated July 21, 1982
Dear children! I invite you to pray and fast for world peace. You have forgotten that with prayer and fasting wars can also be turned away and even natural laws can be suspended. The best fast is bread and water. Everyone except the sick must fast. Begging and charitable works cannot replace fasting.
Some passages from the Bible that can help us understand this message.
Tobias 12,8-12
Good thing is prayer with fasting and almsgiving with justice. Better the little with justice than wealth with injustice. It is better to give alms than to put aside gold. Begging saves from death and purifies from all sin. Those who give alms will enjoy long life. Those who commit sin and injustice are enemies of their lives. I want to show you the whole truth, without hiding anything: I have already taught you that it is good to hide the king's secret, while it is glorious to reveal the works of God. Know therefore that, when you and Sara were in prayer, I would present the witness of your prayer before the glory of the Lord. So even when you buried the dead.
Isaiah 58,1-14
She screams at the top of her mind, have no regard; like a trumpet, raise your voice; he declares his crimes to my people, his sins to the house of Jacob. They seek me out every day, yearning to know my ways, like a people who practice justice and have not abandoned the right of their God; they ask me for just judgments, they crave the closeness of God: "Why fast, if you don't see it, mortify us, if you don't know it?". Behold, on the day of your fast you take care of your affairs, torment all your workers. Here, you fast between quarrels and altercations and hitting with unfair punches. Do not fast any more as you do today, so that your noise can be heard high up. Is the fasting that I crave like this the day on which man mortifies himself? To bend one's head like a rush, to use sackcloth and ashes for the bed, perhaps you would like to call fasting and a day pleasing to the Lord?

Isn't this the fast I want: to untie the unfair chains, remove the bonds of the yoke, put the oppressed free and break every yoke? Does it not consist in sharing bread with the hungry, in introducing the poor, homeless into the house, in dressing someone you see naked, without taking your eyes off those of your flesh? Then your light will rise like the dawn, your wound will heal soon. Your righteousness will walk before you, the glory of the Lord will follow you. Then you will call on him and the Lord will answer you; you will beg for help and he will say, "Here I am!" If you take away the oppression, the pointing of the finger and the ungodly speaking from among you, if you offer the bread to the hungry, if you satisfy the fast, then your light will shine in the darkness, your darkness will be like the noon. The Lord will always guide you, he will satisfy you in arid soils, he will reinvigorate your bones; you will be like an irrigated garden and a spring whose waters do not dry up. Your people will rebuild the ancient ruins, you will rebuild the foundations of distant times. They will call you breccia repairman, restorer of ruined houses to live in. If you refrain from violating the Sabbath, from carrying out business on the day sacred to me, if you will call the Sabbath delight and venerating the holy day to the Lord, if you will honor it by avoiding to set off, to do business and to bargain, then you will find the delight in the Lord. I will make you tread the heights of the earth, I will make you taste the legacy of Jacob your father, since the mouth of the Lord has spoken.
Proverbs 15,25-33
The Lord tears down the house of the proud and makes the widow's boundaries firm. Evil thoughts are abominable to the Lord, but benevolent words are appreciated. Whoever is greedy for dishonest earnings upsets his home; but whoever detests gifts will live. The mind of the righteous meditates before answering, the mouth of the wicked expresses wickedness. The Lord is far from the wicked, but he listens to the prayers of the righteous. A luminous look gladdens the heart; happy news revives the bones. The ear that listens to a salutary rebuke will have its home in the midst of the wise. Whoever refuses the correction despises himself, who listens to the rebuke acquires sense. Fear of God is a school of wisdom, before glory there is humility.
1 Chronicles 22,7-13
David said to Solomon: “My son, I had decided to build a temple in the name of the Lord my God. But this word of the Lord was addressed to me: You have shed too much blood and made great wars; therefore you will not build the temple in my name, because you have spilled too much blood on the earth before me. Behold, a son will be born to you, who will be a man of peace; I will grant him peace of mind from all his enemies around him. He will be called Solomon. In his days I will grant peace and tranquility to Israel. He will build a temple to my name; he will be son to me and I will be father to him. I will establish the throne of his kingdom over Israel forever. Now, my son, the Lord be with you so that you will be able to build a temple to the Lord your God, as he promised you. Well, the Lord grant you wisdom and intelligence, make yourself king of Israel to observe the law of the Lord your God. Of course you will succeed, if you try to practice the statutes and decrees that the Lord has prescribed to Moses for Israel. Be strong, courage; don't be afraid and don't get down.