Do you keep your LO swaddled for MOTN feeds?

Up until 2 - 3 weeks ago, we always changed his diaper and unswaddled LO for his MOTN feedings. But then recently, we've stopped changing pee diapers, and I've been keeping him swaddled. I think this keeps him drowsier...however, he also eats less! I can't get him to take a full feed (3 oz-ish), and he'll only take an ounce or so before nodding off to sleep. Not sure if this means he doesn't actually NEED the feeding at that hour? This is for his 4/5AM feed...