Sleep regression?

So my LO is 8 months almost 9 and lately he’s been so hard to get to sleep. He sleeps in his own bed in our room and usually all he needs is his bottle and blanket and he’s out. But he started to sit up and so now he will roll over, drop his bottle and sit up and cry and we do this routine for atleast 30 mins each night. Could it be a sleep regression? I don’t remember the sleep regression months from my first. Picture of my little monkey for attention 😊