any one else ???

Lizbeth • 4 year old princess and a 3 month old
My baby will be 3 months in a few days I noticed she hasn't been drink her full bottle she normally drink 4oz every 3 hours she's been drink 2oz -and a half at feeding time 
She is happy has can be don't see nothing wrong she starts laughing and baby talking doesn't cry if she finest finish I try to put bottle back in mouth and she pushes it out