13 week old suddenly not sleeping well

[Tigger2013]

Hey exhausted mum here
My boy is 13 weeks he sleeps great during the day in car pram sling or on me has done since 4 weeks old. Whenever I put him in crib he wakes within 5 mins I have honestly tried it all now. Things that smell of me, warming matress, putting in sleeping bag, dark room white noise etc.
Anyway happy for him to sleep like that as I just do things like house work when he awake.
My issue is nights he has always, fed to sleep (ebf) wind and hold him for a little bit then into crib and he sleeps, from 9 weeks he started extending his first bit of sleep and would be anywhere between 6 and 8 hours then be awake every 2-3 after that fir feed again fine, however since his 12 week vaccinations nearly 2 weeks ago I put him down at night he up again an hour later for food then ever 2-3 hours gradually reducing till its every 45 mins. I don't feed if goes. Down to 45 mins just cuddle and rock at this stage he ends up sleeping on me which I do as safely as I can at night as I drift off. He also moving about a lot at night which I think is waking him up.
I wonder if anyone else has had the same. He isn't fighting sleep at any stage so don't think regression wonder if growth spurt although previous ones haven't affected him like this. Due to rubbish nights his day time wake windows have reduced from every 1-1 5 hour to every 45 min to 1 hour. Or is day time sleep too much or too little
Wake up 7-715
Nap1 8-815bfor 30-45 min
Nap 2 around 10 for 30-45 min
Nap 3 around 12-1 normally 2-3 hours
Nap 4 around 430-5 for 20-30 mins
Bedtime 630-7

No advice but I’m having exactly the same issue with my newly 12 week old! She’s ebf and would sleep consistently 9:15pm-8am with 3 feeds. But the past week has started wanting to sleep sooner (7:30-8ish), not settling in her crib after feeds, wanting 4 feeds rather than 3 and the feeds are continuing for 2 hours as she feeds and settles then wakes and feeds a bit more and settles. I got about 3 - 4 hours sleep last night. I wondered if she was cold but she’s in a long sleeve vest, sleepsuit and 2.5 tog in a room that starts at 19 and drops to 17 so I don’t want to wrap her up any warmer. I wondered if she’s under the weather but she seems well in herself. I just don’t know what’s happened!

Miraculously mine seems to have sort of snapped out of it. I wonder if a mix of growth spurt, learning new skill and recovery from vaccines.
So last night for first time ever I did bedtime routine, fed he didn't go to sleep but when I rocked him he kept doing his sleepy babble. It went on for ages and I needed a wee lol. So I laid him down in crib went for wee came back and he was asleep eeek. He then woke at 1230, 320 and 530 for food. Up at 630 because his bottom wind woke him up. The day was no different to a normal day for us.
His new skill though is half rolling himself over by doing this he can now spin himself round in circles on his back. He did managed to get fully on to his side but could quite roll to front and got very annoyed. A lot early for a 3 month old but that's his new skill.