biancan2ckyw

I'm in San Antonio too!

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The three most important elements after RNY gastric bypass surgery are to meet your daily Protein, Fluid and Vitamin requirements. food is secondary because your body is converting your stored fat into the energy that drives your body. Thus you lose weight.
Weight loss is achieved after surgery through meal volume control. You begin at 2 ounces (1/4 cup) per meal and gradually over the next year and a half increase the volume to 1 cup per meal. With this minuscule amount of food, it is next to impossible to meet your protein daily requirements by food alone, so therefore you need to rely on supplements such as Protein Shakes.
There are many different types of formulations on protein shakes. I would recommend that you keep experimenting until you find one that you can tolerate. You don't have to like it, just tolerate it. I used Muscle Milk Light (Vanilla Creme) powder blended with Water and a half a banana. That worked for me. But on the opposite end of the spectrum, you might try premixed Isopure.
Generally with Vitamins you have a wide selection. I had RNY gastric bypass whereas you had the sleeve. I have significantly more vitamins to take than you. My general guidelines were:
Vitamin chemistry is important for absorption. Calcium supplements should be calcium citrate. There are also different chemistries of B12. I use the sublingual B12 and was told to use methylcobalamin. You cannot use a time-release version of B12. If you are taking Iron supplements, it must be ferrous sulfate for the best absorption. gummy vitamins are not absorbed properly and should be avoided. It is important to put a 2 hour separation between the vitamins that contain iron and those that contain calcium.

I do not thing 10-15 ml is going to make any difference. I was told that it was ok to take a sip or two, just not to drink the whole glass with the meal.

It is important to understand what happens inside the body when you eat... especially carbs.
Basically, you eat a fast-absorbing carb (simple carb, like table sugar), and it hits the blood stream quickly. The sugar in your blood goes up, too high. The body sends insulin out to force the sugar into the cells, because too much sugar in the blood is dangerous, but it is safe in the cells.
But now the body might have sent too much insulin, and now your blood sugar is low. Normally adrenaline kicks in about this time to go release some sugar back into the blood. But for some people this mechanism is damaged, so the blood sugar drops and the body can't increase it on its own. So, you have to eat more carbohydrate.
The way to fix this vicious cycle is to always eat carbs with Protein and fat which slows their entry into the bloodstream, and concentrate on eating complex carbs that also enter more slowly.
This is what the glycemic index is about. The lower the #, the slower the sugars hit the bloodstream. Anyone with poor blood sugar control should only consume carbs #54 and less. (As a starting point. Individual results vary).