Feeding and sleeping

Karen
So my little guy will be 3 months tomorrow (so crazy he's already that old) anyway. We have developed a pretty good bedtime routine and goes down within an hour of the same time every night and stays down for about 3-4 hours. The problem is when he wakes up I can't get him to stay awake long enough to really eat so the rest of the night he's up every 1-2 hours. Any tips how to not wake him too much he won't go back down but enough for a solid feeding?? Thanks!!