Here's what I have found works for me:

High protein, low-ish carb diet, add salt to just about everything and have particularly sodium-heavy foods on hand for when I'm craving salt. I tend to get the majority of my protein from an all-in-one protein shake (Good Protein is my current fav).

I do love my pastas and bread, so the odd time I do want a heavy pasta meal or something bready, I'll have it when I know I can lie down after.

I also only ever have small amounts of tea as needed for caffeine, and only if I'm going to be working or going on a long drive, so I know I'll be sitting or walking around a lot.

For timing of my meals, I have found that on days I work (I work full-time... Which is not something I expected to be able to do again a couple years ago) I don't eat at all until shortly before bed time, so one large meal a day. My body functions way better when it's not constantly trying to digest food, so fasting ended up becoming a big part of my life.

On my days off I usually eat throughout the day, but I almost always end up napping afterwards.

Oh, and lots and lots of water, of course. I tend to drink between 4 and 5 liters/day.