Why won't this kid sleeeep!? 😴

My son just turned 1 a couple of weeks ago. His pedi says he should be sleeping at least 12-14 hours total per day. (10-11 at night, and 2-3 in naps). He doesn't stinking sleep! I'm going crazy. He takes forever to fall asleep, no matter what we do, he's up until 10 or 11pm. Then he sleeps for maybe 5 hours, and wakes up. If we put him in bed with us when he wakes, he'll sleep until 7ish, but if not, he's up for the day by 4am. His nap is maybe an hour, sometimes an hour and a half. And he won't take more than 1 of those. So basically, the little turkey is sleeping about half as much as he's supposed to, which means mama is TIRED. Lol. Help. What do I do!?