Babys first time flying

RJ

Ladies. We are traveling within the country with our 9 month old for the first time.

1.>So are we allowed to take carseat, base and stroller?

Is that ok if we just take the stroller or should we carry both?

2.> Is baby's homemade food allowed in the flight or just the milk?

Please respond. Need your suggestions. Thankyou in advance ☺