Diabetic on Insulin Pump, Considering Lap Band Surgery Questions?

I'm worried that I wont be able to drink enough water if I can only have a teaspoon size of water at a time. I'm also worried about my blood sugar plummeting if I don't eat enough with the pump giving me insulin every hour on the hour. How will I bolus with little food. Serving sizes don't come in teaspoons when counting carbs. I'm 5'2" , 260pds, and 47 years old. MISERABLE but LOVE to eat and drink a 12 pack of diet coke a day. HELP!

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