My 4 month old baby has stopped being sunny and smily and chatty and just whines all the time! If I put her down she cries, doesn't want to play with her toys as she used to and won't sit on my lap quietly- basically she wants me to talk, sing and play with her all the time. She gets up at 5 in the morning which makes it a really long day and I am exhausted and running out of ideas to keep her entertained. Is this normal? And will it end soon?!