7 hrs of sleep at 7weeks?

Ashley

Little one will be 7 weeks on Saturday, and last night he was out for 7 hours straight! He had a nap from 12-2am which was supposed to be the beginning of bedtime, but he woke up hungry and went back down at 2:30, and woke up right now at 9am. We usually will get up around 5 or 6 but not this morning. Should I be worried or let him sleep the same tonight?