When my DS was 4 months, our "schedule" (when I say schedule, I mean somewhat regular/sometimes irregular routine initiated and maintained by him) was along these lines:
6-7am: awake for the day (he's a morning person) until he shows signs of fussiness
9 am: nurse to nap which lasts around 1 hour, tops, and the nursing is pretty much the entire nap, maybe there are 2-3 separate times where letdown happens, so this might be 2-3 feeds?
10ish: we get up, while away the day, change a lot of diapers
noonish: another nurse/nap. This nap would last anywhere from 1.5-3.5 hours depending on how worn out he was and previous nap length, and I am sometimes able to break away to eat lunch or whatever, then he normally nurses a few times within the nap (I just let him sleep on the floor and stay for the most part nearby, and come back to side-lying nursing every time he stirs/roots) and upon waking.
afternoon: nursing and naps are highly variable, and there are probably 3-4 quick snacks in there, and perhaps a quick catnap (20 minutes or less) around 4ish
6 pm: go for a walk, at which point he sometimes falls asleep, and I nurse him once we get home
7 or 8 pm: he goes down for the night
10-12pm another nursing
2am almost on the dot, another nursing
4am his sleep becomes restless, so he's getting well-rested, but is waking me up, and sometimes I can sneak another nursing in there to try to keep him calm until a more reasonable wake-up time.
6am: the last nursing of the night.
This is the rough pattern we were experiencing from somewhere around 3 months until about 4.5 months. Lately our routine has changed. That is to say, even once you think you have a routine going, your baby will change it up on you just to keep you on your toes. But I'm able to accommodate his changes and growth spurts/teething/distractability because I don't try to remain in a rigid schedule, but nurse/offer naps on demand. So all this in 24 hours roughly equals probably 10 nursings at a minimum (he's very fat) and maybe 3 naps which average 1.5 hours each during a 13-hour "day" and he sleeps pretty solidly at night (or if he's awake, he's being very quiet about it) since we cosleep, so he doesn't have time to wake up once he starts wiggling/rooting before he gets fed again. I must say, the days where he is overtired due to insufficient napping make for very long evenings and nights, so I'm a firm believer in naps.
Now, at 5 months, our pattern is leaning a little towards 2 longish naps or else 3 very small catnaps, depending on what external factors there are. He still eats about the same number of times a day, though, just now he doesn't always fall asleep during a nursing.