L.L.
Hi N., I flew to LA with my son when he was 11 months old. I tried to get him on West Coast time right away; it took about 2 days. Not bad, however my trip lasted 10 days so we had more than a week of our usual schedule. That said, I think you'll want to get on West Coast time even though your trip is shorter. It'll make the second half of your trip really enjoyable. Expect your son to wake up very early on your first day or two. But if you can try to stretch out the time between naps to get him acclimated that should help. And, once you're home I bet you'll be surprised how quickly he snaps back to East Coast time. Safe travels and have fun!