P, welcome to OCF! Im glad you have found this forum. Its full of compassionate, caring people who are very knowledgeable and supportive. Treatments are not easy for everyone, a lucky few sail right thru with little side effects.
With taking the 3 large doses of Cisplatin, watch carefully for any hearing issues. Make sure you speak up and tell your doctor immediately if your hearing changes at all. Also make very sure you take in adequate water daily to help flush it out of your body. It can be very rough on the kidneys so this is vitally important!
Im very glad to read you already have the PEG tube as you are small. Your body is working extra hard to not only fight off the cancer but to rebuild itself while you are going thru treatments. Make sure you continue to swallow something every single day, several times per day even if it gets difficult. Your daily calories should be 2500+ and water a minimum of 48oz. This sounds like alot but your body is burning calories up at an amazing rate.
Oral cancer can be difficult to go thru the treatments as they do tend to get progressively worse as time goes on. Keeping good hydration and nutrition will make a huge difference in how you do. Here is a list of easy to eat foods that mostly have a smoother texture so go down a little easier.
I hope you have lots of support at home. Feel free to ask any questions you have and you will get several honest replies from people who know, they are the caregivers and survivors of this horrible disease.
Wishing you all the very best as you go thru treatments!
List of Easy to Eat Foods