my 12 week old used to sleep for 6-9 hour chunks at night time from really early on which i know is lucky but now he is awake every hour and a half regardless just to be resettled and it’s really getting to me the exhaustion! he’s 12 weeks old but he was 2 weeks late so i’m not sure if this is the 4 month sleep regression come early as i read it can come between 3-5 months and he is almost 3 months and adjusted age would be over 3 months anyway so is that what this is? and do we just ride it out and it’ll get better or do i need to be doing something to help it come to an end? first time mum so literally no idea