My 3 1/2 month old stopped sleeping well!

[RaeOsunshine]

my 3 1/2 month old was going to bed usually around 11:00 and would sleep through the night until 8:30am. He is exclusively BF. The past 2 days I can't get him to bed before 1:00, and even that is like pulling teeth. Then he'll wake up 2-3 hours later, and then it takes me another hour to get him back to sleep! O am exhausted! What is going on with my baby!!??

Sounds like his rhythms are out of whack to me. Does he nap in the afternoon? I'd be tempted to keep him awake then and try getting him off way earlier - like maybe 8 o'clock. Then that 2-hour 1am stretch becomes his morning nap, if that makes sense.

He takes 2 good naps a day, and then a small cat nap around 5 or 6...