How do you know you're out of the 4m sleep regression?

[CremeDeSudo]

Is it possible for a 19wk old (15wk adjusted) to be over it? Or have we just been through something else entirely and it's still to come

She's still waking up hourly from around 3am but will settle herself to sleep now and usually sleeps solidly until then.

Could it be a developmental leap or growth spurt? Although I have heard people whose babies went through the regression at 3 months so could have been that!

According to the Wonder Weeks she's just entered leap 4 but it feels like she's in a sunny period now and just got over a leap! Who knows eh. Fingers crossed that was it!