We are in California for 10 days (we live on the east coast) and I'm wondering if anyone has any tips to keep LO from waking so early. He typically sleeps from 9-10pm to 8-9am. The first night here, he slept from 9pm PST-8am PST. I was so excited because I thought he adjusted really quickly. The past 2 days, however, he has woken up between 5:45-6am PST. He's happy when he wakes, but clearly isn't ready to wake up for the day when he's only gotten 8 hours of sleep.

Any tips for helping him sleep later or am I just doomed for early wakeups for the next week? He doesn't have any issues staying up later/napping.