Help!! What do I do I'm so tired my 1st girl is 9yrs an severly disabled but no problem my 2nd girl is 11wks &?

Check with your pediatrician but I think it is great that she's even sleeping through the night. I know when my 6 year old was younger I would put blankets on the windows to make it darker and turn on a lullaby CD and rock her til she would fall asleep.