Sleeping

I’ve always just let my baby sleep until she wakes up she’s 3 months old when she’s tired she asleep and I don’t wanna wake her up so she’s in a bad mood at all. She’s always had quite long naps but has quite long awake periods at the same time so it does even out.

If the baby didn’t achieve the birth weight yet, yes you should wake them up every 3 hours

If the babi have reached the weight then you don’t have to worry as much.

My baby is 4 weeks we wake her every 3 hours throughout the day and let her wake herself for a feed at night but we never let her go more then 6 hours at night

During the day or overnight?

as long as they've regained birth weight just let them sleep. they'll tell you when they're hungry

If daytime, feed at 3 hours (doesn't have to wake if she feeds well while asleep). Night time, let her sleep if back to birth weight