I was the same way with protein drinks. I like different ones now than when I did pre-op. Chike is one. Love all their flavors(28grams protein) including the coffee one(20grams) but I wasn't cleared for coffee till I believe 3 months out. The other one I like is premier protien shakes. I can only find them ready to drink at walmart. Don't know if they make the powder version. They have 30 grams of protein which I like.
I add protein powder and pb to quite a few things I make now.
I am trying to remember my surgeons rules. I believe I was on liquid diet for two weeks and then soft foods. But I had a rny don't know if its any different for a sleeve surgery. I just remember I was so happy to be able to eat soft foods.