I am sleep deprived.

Lina started sleeping through the night consistently a few weeks ago. I was thrilled!

All of a sudden this week she is waking up every three hours at night. She eats for just a bit and then goes back to sleep.

Every three hours!! I am dying here! She didn't even do this as a newborn.....and she's 3 1/2 months now for crying out loud!

Any ideas??