Its breast milk and, that was my concern because he should be pooping and he's not.. I'm hoping by doing it through the bottle he'll poop, or it'll make a difference..
It's perfectly fine to bottle feed. My son alternated between bottle and breast from 4 days old. Some people worry because they say baby will get confused and not latch well, but I haven't known anyone personally who had that issue.
Well your baby should definitely be eating every 2 and a half to 3 hours even if you have to make em' wake up, he should be eating. And if your nursing or bottle feeding breast milk the baby should actually poop multiple times a day now if its formula it takes longer to get through the baby system ...but he should be pooping.