Hi!
My husband is currently in treatment similar to yours. Here is the few things I can strongly recommend:
Get a journal. Write down what/when you feed yourself, when you take meds, when you have bowel movements, symptoms, and which medical personal you had on each day. This is important because you need to keep track of calories. Medications sometimes aren't effective anymore (especially pain) and if you're taking them frequently and still feeling pain you can get something better. Cisplatin can cause hearing problems, so if you have ringing in the ears or other hearing problems report it right away. If you have any new symptoms through your treatment tell your doctors so they can prescribe something or offer advice. You will see so many medical professionals and sometimes they will have opinions that differ. I highly recommend writing down the names of your nurses and people you talk to on the phone. This saves confusion if should something come up.
He is using Miaderm cream. Maybe someone who has tried different creams can offer you their opinion on which is best. You will have a speech therapist that will give you swallowing exercises to do, but the best thing is to keep swallowing as much as you can.