Ok I know it says that within one hour of a feeding that any formula left should be thrown out but like sometimes dominic doesnt take it all at once. He's actually a lil nibbler so like just now for instance I had a 4 oz bottle for him and he started drinking it at 9 pm. Well he had 1 & 1/2 oz and hes done. Now its 920 pm. Since it's only been 20 minutes, can I put it back in the fridge or do I still have to dump it? I just feel like I am wasting so much formula. My doc told me when in doubt throw it out lol but thats only if I forgot what time he started eating. Thx in advance. ~ erica.