Sleep regression 13 weeks

Is it too soon for sleep regression? 😩😩😩

Baby boy is put to bed and then wakes 3 times in two hours. I let him fall into a deep sleep on me and then try putting him back into bed. This has happened 3 nights in a row.

Normal routine is bed at 8:30/9pm. Usually he only wakes once in the night around 4/5am and takes 5oz.

He was extremely fussy last night (even in my arms) and I’m preparing myself for another long night 😂

How long can this last?