That's why I'm concerned about him being neutered tomorrow. They said no food/water after midnight tonight and I am not bringing him there until 7:30 a.m. tomorrow. Then I don't know when the actual surgery will be. Should I give him Karo syrup in the morning (been to a few pet stores around here and can't find nutrical - may have to order online)?
Also, how many hours of not eating puts him into the danger zone? I know there is no exact time but an idea would help me know when I should be concerned

Thanks for all the help!