Morning ladies! Does waking every hour instead of sleeping through the night count as a milestone?

Leap4 is over so I'm assuming we're now in the 4 month sleep regression...or all of this is made up and I just have a baby who now hates sleeping.
My LO is "talking" a whole lot more, experimenting with different sounds and pitches and giggles when you imitate him. He also is rolling tummy to back a little more consistently (did it twice in a row then got cranky when I tried to make him do it again). He's almost rolling back to belly, gets his whole torso over but his arms are stuck.
Re: Milestone Monday 12-11
on the 'what counts as a milestone' i'll add - can we count every cold/cough/trip to the doctor? daycare germs are real.
I'm sorry
Think about every cold/cough as his immune system getting stronger. We're not in daycare right now so it means we'll have months of colds later when he does start.
New milestone for today...mashed potatoes. We gave him his first taste of food and he couldn’t get enough. So funny to watch
https://pregnantchicken.com/the-new-baby-milestones/
Now he’s waking up every 2-3 hours, takes 1.5-2 hours to get to sleep initially, and screams. He’s actually starting to refuse to nurse now (nursing strike due to teething?).
We did start giving him rice cereal as a supplement per his pediatrician’s recommendation, but no matter how milky or watery I make it, he has such a hard time going to the bathroom and passing gas. Hoping his system gets adjusted soon, because I’m pretty sure that the uncomfortable feeling in his belly plays a major part in waking him up amd making him fussy.