I feel like this has been discusses recently but my search did not find it. Maybe a different board?
Anyway, what time is your LO in bed for the night & what time does LO wake up?
We are having a bit of trouble with the 4mo sleep regression, but even before that, LO gets up REALLY early....then again, so does DS#1. He is usually in bed by 7ish (which is pushing it some nights because the DLS has messed him up also), there are a few night wakings, his 3/4:00 waking is difficult to get him back to sleep, and then he is up for the day between 5-5:30. EVERY.DAY.
Anyone else have an early riser? I'd bump his bedtime later, but he's so tired by that point already.