I am sorry I can't offer any help. We have the exact same problem. Our son is 13 weeks old and used to be a terrible sleeper during the day but always great at night. He pretty much slept through the night from 8 weeks.
With the help of BW we have sorted out his daytime naps and he is doing great on a 3-hour routine. However, since his days are so much better now his nights turned into a nightmare. He goes down at 7:30 with no problem, but from 11pm or so he keeps waking up every 30 minutes to 1 hour looking for his pacifier. He's clearly not hungry and goes right back to sleep after he gets the pacifier but we still have to get up all the time

We have started to put him down unswaddled hoping he would discover his fingers and it works occassionally but it doesn't satisfy him like the pacifier.
Shh/Pat doesn't work for us. He gets really upset as soon as we start and completely wakes up so we always rely on the pacifier.
Our routine is as follows:
E:7:00
A:7:20
S:8:30 (he wakes up after 1 hr and I'm trying to extend his nap)
E:10:00
A:10:20
S:11:30 (we have to do the school run for DS#1 at this time so mostly naps in stroller or carrier)
E:13:00
A:13:20
S:14:00
A:15:30
E:16:00
A:16:20
S:17:30 (catnap in carrier)
A:18:30 (bathtime)
E:19:00
S:19:30
We tried to do the DF around 22:00-23:00 but the nights seemed to be even worse. We ow wait for him to demand food at anytime between 1:00 and 3:00.