9 month old suddenly waking every hour

[Seahawk80]

DS is 9.5 months and has never been the best sleeper but for the last 6 weeks he's finally been in a decent routine with 2 naps a day and goes to bed at 7.30 with 2 wake ups around 11pm and 4am and up at 6.30. For the last 2 nights he has woken every hour. There's nothing wrong as he goes back to sleep really quickly and stops crying as soon as I go in the room. Please tell me this is just a quick phase! I feel like I have been hit by a truck.

Just to add he doesn't have a dummy, never has as he didn't like it. He can self settle normally although I do cuddle and feed him on his usual 2 night wakes.

Normal and yes, a phase. DD had a huge sleep regression at that age. There's so much going on developmentally they get a bit wired I think. Could turn out to be some teething in the mix too.