DD was born 2 days before your little bubba. And she was 6 weeks early.
She's usually only up for a total of an hour with a 2 1/2 - 3 hour sleep in between. I wake her from her sleep.
Just because he's making noise doesn't mean he's not tired. Put him to bed, if you believe he's tired, and let him just complain. Only pick him up if he's distressed.
DD is on a routine of -- Up for as long as she wants, which is 60 minutes. Maybe 90mins at the most. Put to bed, and she self settles. It can take up to half an hour for her to put herself to sleep.
And then I wake her from her sleep after 2 1/2 to 3 hours.

It may just be a phase he's going through. Hopefully someone else can offer some more advice.
Good luck.