Sleeping habits


Ok mommies, have a question. My son sleeps like a champ, he’s almost 5 months old and has slept all night long since he was about 2 months old (when i say all night i mean 9-12 hour stretch!). But, the only way he will fall asleep is if he eats. Like he will drink his bottle and fall asleep while he’s still drinking. Is this normal? I’m not really sure so i figured it would be best to ask!