what should I check in and what should I carry on?

Shaki • Mommy to Prince JoJo 👶🏽💙 #JA#PR 🇯🇲🇵🇷
Okay my 8 month old, hubby and I are going on our first international trip to Jamaica with baby for 4 days & 3 nights. This is obviously my first time traveling with a baby . What should I check in and what should I carry on for baby?  Thanks in advance