New born baby breathing. Connect online!

Hello sir My baby was In NICU yesterday for she eated little poop while delevery and doctor suggested to put IN NICU immediate delevery we went NICU now 24 hrs completed in NICU DOCTOR suggested they observe again 24hrs for observation but we denied because doctor said she taking breathing without oxygen 90* range heart beat was 150 around. But doctor suggested baby needs to take breath 100 on without oxygen but we discharged and handed over the baby in mother ward Hence may I know how we can find the baby breath good how she feels Pls advice. She 2* days old only but since as of now she was sleeping more and more every time sir why is this is this good or and she taking feed around 20 ml at once Pls advice sir this I can't connect online