Baby sleep help

When did everyones babies start sleeping through the night?

I have a 3 month old, and shes never been a good sleeper but is getting worse.

She wakes up every 1 or 2 hours throughout the night. Its starting to really take a toll on my mental health, I live in a permanent state of exhaustion.

I think it doesnt help that everyone around me, friends and family are all “My babies slept through the night from birth”. So its making me feel like I’m doing something seriously wrong. I know I read online that actually its normal for babies to wake reguarly for a feed, but other people are making me feel like its not.

I’ve been given all sorts of advice including a family member saying “you need to feed her water only in the night, so she’ll start learning she needs to wait till morning for milk and she’ll start getting bored of waking up just for water”…. like that does not sit right with me at all.

I’m just tired and feel like I’m doing things so wrong 😭

I try and sleep when she naps in the day, but shes not always great with naps either and they dont last very long. And its easier said than done to sleep when i need to look after my self and housework etc. And i do get help from people when I can as well, but it just feels never ending.