First of all, congratz!
If your baby wasn't born underweight, and has regained the weight he lost since birth, I say let him be. Adjusting to the life outside the womb is a shock that takes some getting used to. If he feeds well when he does eat, and there's no reason to suspect he's losing weight - let him sleep. Some babies only feed a few times a day after birth. It will change dozens of times.
If he wants to eat - give him as much as he wants (especially if you're breastfeeding). If not - 3-4 hours. If you are breastfeeding (which I highly recommend), bear in mind that a feeding can take as long as an hour sometimes, and that's fine. He just wants to feel his mommy close by...