Advancing the diet

Well it's only 6 days after my surgery and I'm getting ready to move to full liquid diet. It's been pretty rough on clears, especially the last couple days. I feel like I finally hit the wall on my new starvation diet, and I'm feeling tired and run down. Anybody have any issues with certain foods on the full liquid diet? Anything I should avoid, or try? The discharge info. they gave me about the diet was for Gastric Bypass, and I hear us sleevers can tolerate the foods better, and have less of the dumping syndrome. Anybody else notice this?