I know the proper way to thaw frozen milk is overnight in the fridge; but if I forget to do it the night before, can I just thaw the frozen milk in a bowl of hot water?

Actually when I'm in a rush and I forgot about thawing milk I put it in hot water to thaw. It's best to thaw it by running tap water over it or if you need the thawing to be faster run warm water over it. http://www.parents.com/baby/care/american-baby-how-tos/freezing-breast-milk/