I have to supplement DD feedings with 2 oz of formula at each feeding because my supply is low. I am starting fenugreek to try to increase my supply so I don't have to supplement, or can limit how many times I supplement. Anyways, when DD has her fill it is normally with the formula and I don't mind having to toss what is left (normally less than an ounce), but I don't want to have to toss my BM if I can increase my supply to what she takes in a day. I am curious what you ladies do when LO does not finish their bottle, especially when the bottle already had to be warmed after being in the fridge. Do you re-refrigerate it? Or toss it?