I just want to sleep

What to do when baby wakes up at 3:30am. Wanting nothing more than to play for a few hours?

He sleeps in our bedroom ane is just japping and yelling😩

Update : he is 6 months (and a day) and he actually used to sleep 12 hr nights 10pm to 10am.

Eventually by 6am he wanted food, he got fed and we slept a few more hours. 😴