I know exactly how you feel. My daughter would constantly wake up at night up until a few months ago. She still wake up once a night and like your son her belly is always growling. We give her a small bottle (2 oz.) with her meds, and she sleeps the rest of the night with me. I dont mind having her in my bed for a few hours and i get all the sleep that i need. She is starting to sleep longer so i think pretty soon she will be sleeping through the night again. She is 13 months old.