I just had gastric sleeve on Saturday the 23rd and the first two-three days I did feel full and .. not hungry at all. But now I'm worried because I'm in a position where I don't know how much to drink and I don't know when to feel full? The guide sheet says 30 ML every 15 minutes but I don't know how much that is and I don't know when to get full and its worrying me! Its my first week and I'm doing Clear Liquids ONLY! pls help.