Yes, the period when you have raw sores is very tough. But they will go away soon! (And yes, our oral hygiene was never better :-). BTW, I assume you are using flouride trays - my dental-oncologist told me to use them daily since the lack of saliva tremendously increases tooth decay; therefore, without daily use of flouride I would need crowns for most of my teeth in no time.
The possibility of chocking is real (my doctors warned me about it) - I believe you are wise if you are careful.
But - again - this will get better and better. A month ago it never crossed my mind to participate in a meeting without my water bottle. If I forgot to take one with me, I had to leave to get it. Today, if I forget, no problem - I will be OK up to 30-45 minutes.
Oh, and cofee. I don't know if you drink cofee - it was hard for me to be without it. Since it is a drying agent, I couldn't drink it after a few weeks of treatments - it made my throat so dry that it was pure torture. I was certain that I would never drink cofee again.
A few weeks ago, for my birthday, I got a Starbucks card, and now I am in the line every morning...