4 month sleep regression?

Has anyone NOT had a horrible 4 month sleep regression?

Our son has just started sleeping well alone and he is 3 months. He was a horrible sleeper from the start (we ended up bedsharing and have just gotten him into his pack n play at night) and now I’m so afraid he’s going to reverse all the progress we’ve made once he hits 4 months.

I’m looking for any hope you guys have to offer 😭