Hey, it is been a while sonce i was thst desperate with my older son here

So now i have a 2,5 mo who is very difficult to put to sleep in general but he used to sleep at least through 3-4 hours at night.
Now he wakes up every 2 hours and settles down only after a full feed (breasfeed).
So i am confused because it started around the same time we got on a really good schedule with EASY. So his daytime sleep became much better (before he only had very short naps and was fussy for the whole day) but nights are killing me.
Our routine is +- like this:
7 e
7-830 a
830-10 s
10 -e
10-1130 a
11.30-13 s
13 e
13-1430 a
14.30-16 s
16 e
16&1730 a
1730-1830 s
1830 e
Bath bdtime routine
20 s
And then he eats at around 23 and then every 2-2,5 hours
I would appreciate any ideas!_