I did not want to eat at all so food preparation wasn't an issue. I didn't try anything like Jello or Pudding until the soft food stage, I may have tried some Jello and had the same feeling as Ryan, wanted to throw up. Admittedly I wanted to throw up the first 6 months post op but used it to control myself. I won't eat if I feel nauseated. After you do too much anything post op, the vomiting isn't fun and it's scary to think about popping a staple. I bought de-caf coffee and never made it, for some reason I switched to tea post op and have not gone back. I finally threw away the Jello and Pudding in my fridge after the soft stage; couldn't face any of it. For viable pantry foods I packed up a big bag and took it along with a few bags of pantry staples from the grocery to the local food bank. I felt good about doing that and at that time they had major long lines for food. Cleaned out my pantry too. If you are into making broth, that will freeze and come in handy. Those cubes on Amazon, can't recall the name are good for 1 cup portions frozen. I tried various store-bought broths and I didn't really care for them.
I was a protein drink failure so I don't have advice there, but you have a wealth of knowledgeable resources in this group.
Biggest thing is you aren't going to be hungry, consider using this time to get a head start before the stalls happen.
GOOD LUCK and get well soon! You are getting ready to have a whole new you. It was harder than I thought, but I am beginning to forget the misery (guess it's like childbirth, they say you forget, dunno dog mom only)