What on Earth is this evening behaviour about? 5 1/2 month DD

[KikiShack]

My DD is 5 1/2 months and this week has started a lovely new sleep related habit. I put her down and she goes to sleep at about 7pm.
She's breastfed until nearly in a milk coma (used to be fed to sleep), then I cuddle her while she watches her light show as I'm trying to create an association there, and when she's deep asleep I move her into her cot. I'm going to try moving her while drowsy and then cuddling her in the cot next week, honest...
Anyway she then wakes after 45 mins, I settle her in her cot by holding her arms by her side and sshing her, then she wakes again another 20 mins later, again I ssh, then another 10 / 5 / 15 / 20 etc until at some point between 9 and 10 she has a bit of a meltdown, I feed her again, normally to sleep, then she sleeps solidly until 2am, quick feed, then sleeps unil 6.30 when it's wake up time. She's done that every night this week. It's a brand new thing waking so much in the evening.
She is teething, but her front two teeth are out so not sure if they should be causing pain still? And we give her calpol before bed.
Also she's in her own room now (kind of, DP and I are sleeping in the spare room and leaving her in our room as a trial rather than move her formally yet), and wasn't sleeping solidly 10-2 then 2.30-6.30 until she was on her own - a couple of weeks ago she was just waking every 2 hours for short feeds.

Has anyone else had this constant evening waking before a good nights sleep? I'm not sure what to do to stop it other than keep ssshing her and hoping it's just a phase.

In case it helps we've got her into a proper nap routine this week too, might they be related?
Her routine (fairly flexible and baby led) is:
6.30 wake
8.45 nap for an hour
9.45 wake
12.00 nap for an hour and 45
13.45 wake
4.00 nap for an hour
5.00 wake
5.45 start bedtime routine (bath, massage, boob, cuddle with lightshow)
7ish asleep

I record all sleep on an app and I know she's averaging about 14-14.5 hours a day all in, with about 3-4 during the day and about 11 overnight.

Any ideas very welcome indeed.
TIA

[callamia]

My five and half month old does a similar thing. I feed him to sleep (bf), put him in his cot and half an hour/forty mins later, he's awake. If I feed him again then, he'll go back down and sleep for anything between four and seven hours. At night, I kind of just go with whatever is happening - he usually wakes to feed, and that's not so bad, but I'm looking forward to this odd evening phase changing.

[josephine1986]

Is it like a bit of cluster feeding? Or maybe the bedtime is too early so the baby treats it like a nap?

[JustSayNoKids]

Is she hungry?

[KikiShack]

I don't think she's hungry, I sometimes feed her if nothing else will settle her and often she'll just feed for a couple of minutes. She had certainly fed very well during the day.
I also find it hard to believe she's not tired. I record all her sleep etc and she's pretty much exactly what the books/internet says for both daytime and nighttime sleep.
All very weird!