Flying with my 10 week old. Tips needed!

kris
We'll be flying next weekend to visit family in Dallas. It's a 3 hour (no layover) flight. We'll be staying for a week. What can I pack and bring to make life easier? I've never traveled with a baby and the task seems daunting! I know to bring all the pump parts and bottles. But I'm not sure on how much to bring of everything. Help!