I was sleeved on 2/9 and have already lost the full feeling after drinking water. I could easily drink more than the allotted 2 oz every 15 minutes but am worried about stretching my pouch. I don't go in for my follow-up until 2/19 and don't want to call my surgeon with something so trivial.

All doctors seem to be different as far as what is ok and what isn't. But your question is one I specifically asked my doctor. And he said no, you can't drink too much water during the liquids-only phase. He also told me that thin liquids (like water) don't really stay in your pouch for very long, so it would seem that stretching your pouch by drinking water is highly unlikely.