Sleep regression or grow spurt?

Sage • Mother to Zander & Kaya, wife to my King Ryan. Fur mommy as well. 💕 I love my little family & my life. My kids & husband saved me. They are blessings directly from god 😇💖
So I think my LO is going through a sleep regression.  But is it actually a grow spurt? He was sleeping through the night like 9-10 hours with out waking up taking like 3-4 hour to hour an half naps.  Sometimes hed take like 2.5 hour long naps and now he wakes up 1-3 times a night to eat, has to sleep in our bed with us, always wants to be held, he takes 3 naps for 45 minutes each and I can't get him to take anymore naps or sleep anymore than that.  He use to play by himself and now he can't be put down and he only wants mommy.  He acts like he's in pain like arching his back and everything while screaming. And he eats so much more frequently