My son is the same 3 weeks Monday he is asleep within a hour but as soon as he lays down and the light goes out it all goes hay wire, I've been told it's a regression, longest regression we have ever been in
Have you maybe tried a later bedtime? We were struggling a couple months ago until I just pushed bedtime to 8pm, shes fully asleep by around half 8. Since then we've had a few difficult ones but it's mostly been okay. She naps 12-2, and if she sleeps past 2 she often won't be fully asleep by 9pm. She's had a couple of no nap days. The choice is really between her being absolutely exhausted and struggling every night until shes allowed to sleep, or us just spending another hour with her in the evenings.
I’ve been having a lot of chats with my mum friends recently and a lot of us are finding bed time has got worse recently. I think dropping or capping daytime naps is worth trying. My son doesn’t nap during the day now, and his night time sleep has been better since