One thing my drs told me was to rinse with the baking soda and salt mixture, they also said that if I wanted I could take club soda let it flatten at room temp, and then rinse swish and drink. It acts the same as the baking soda mixture, but since you drink it it helps heal and sooth all the way down, and is a fluid so it helps with dehydration.

If you can try buying a protein powder and add a scoop to one of your boosts. It will help you increase your protein, and calories as well.

Good luck... you can get through this.