Going through a sleep regression 😭 my baby will be 4 months in December 1st. How long does this last??

We still don’t really have a set bed time as she only does (or used too) 4-5 hour stretches. So bed time is still late like 11-12.

Her naps are still all over the place during the day, can only stay awake between 1-2 hours during naps. Is this okay?

Please share your routines & if you have bed times / if baby sleeps like 6+ hours ???