Sleep regression

Alright mamas (& daddy’s)...

my son had been doing SO good. Only waking up once maybe twice from 815pm-8am(ish). Now he is getting up every1-3 hours. Today he is 3 months old. I’ve heard about the 4 month sleep regression but is it possible he’s getting it early? I start work back the week after next & my husband works out of state so it’s literally just me all day/nights & I’m so scared for work if this sticks around,it’s like we’re back to newborn stage😩

Anyone else experience this? If so how long did it last?? Or is it just a random thing that’s going on?

TIA-I’m a first time mama.