My 3 yr old is drinking lots of water I had several people tell me wow she drinks a lot of water, she also eats a lot not big portions, normal portions but then half hour to an hour ask for more food or snack, she is not over weight.just the other day her daycare told me have her get checked she is drinking to much water and goes to the potty alot. I talked to the doctor and had her urine checked but no sugar in her urine, but i check her sugar two hour after eating dinner and it was 373 an hour after that total of 3 hrs her sugar went down to 80. what does this mean. also the other night she pee the bed 3 times in 1 hour