Sleep schedule suddenly changed at 4 months - what's happening?
My son was doing pretty well with a 7pm bedtime and sleeping til 5am, then up for the day. Now for the past week he's been going down at like 9pm and still waking at 5am but also wants to eat at 2am again. Did something shift developmentally? He's EBF and my wife is losing it because she was finally getting decent sleep. Should we be concerned or is this just a phase?
The 2am feeding return is normal for the regression. Their sleep cycles are developing and it can create weird schedules temporarily. Your wife just has to white-knuckle through it - unfortunately there's not much you can do besides tag-team the nights.