I'm planning to take a domestic flight with my 2 month old this month. Is the baby's birth certificate is sufficient to fly with her?

A. There is no baby certificate required as far as I know but still if you want you can carry a picture with you in the mobile phone that is going to be enough also since you are travelling with such a small child cover the years with ear plugs are cotton otherwise the air pressure is going to travel a lot also feed the child before takeoff and after landing avoid feeding on mid flight