Sleep Regression 4.5 year old

[libertysilk]

I'm at the end of my tether with my 4.5 year old dd. In the last 2-3 weeks she just isn't going to sleep. I'll put her to bed at usual time of between 7-7.30. Read a story, sometimes two and kiss her goodnight. She's been coming out 2-3 times, singing in bed, playing with her teddies etc. I'll put her back to bed, remaining calm, but firm, saying go to sleep. No joy. Last few nights it been 10pm and she's still awake.
I'm 36.5 weeks pregnant (father doesn't live with us). I'm exhausted and so is she. Why isn't she going to sleep like she used to? I don't know what to do?
I'm on maternity leave now, and spend as much time as possible being with her. Playing, reading, baking, colouring, watching movies etc.
Where am I going wrong?

It comes Fownhope you firm rules and consistency at this age.

Establish what she is/is not allowed to do at sleep time, then offer zero negotiation and wriggle room in establishing these rules.

My rules would be:

• you stay in bed
• you lie down
• you are quiet

If she wants to lie down on her bed quietly and no go to sleep, that's her prerogative. It's hoping to be boring though (given I would have allow toys know bed).

Fownhope = comes down (autocorrect fail)

Thank you for responding. I was firm, but fair this evening. Bath, story and left dd to look through a book for a bit. Came out twice, promptly put back to bed again. Then stayed in bed and fell asleep. Success! Checked on her and snuggled up with teddy fast asleep. Bliss.
Aiming to do the same tomorrow night too. :)