Losing my mind on my 2.5 yr old toddlers sleep these days. Plz help.

A

My usually great sleeping 2.5 yr old is suddenly a nightmare with sleep. Previously she would easily go down for a 1.5-2hr nap and 8pm bedtime. There wouldnt be much fussing about this. Since this past month shes not only up multiple times in the night screaming for us to come to her room, shes also constantly fighting sleep. Like way before bed time she will be saying she doesnt wanna sleep. Its the same battle whether she has napped or not that day. Length of nap doesnt change anything either as shes just constantly saying no sleep all of a sudden. We used to literally just put her in bed and say good night before this phase started.

Once shes finally down (after lots of negotiations and calling us back to her room crying) she gets up and screams every two hours at night. This has been going on for weeks. Sometimes all she needs is for us to come and stroke her head a couple times and shes back down, other times she wants us to sit by her bed for like half an hour while shes half asleep. Its so disruptive every single night bc even if i get lucky and shes back down in 5min, IM trying to go back to sleep once she is sleeping and ive snuck out of her room only to do it again a couple hrs later. Sometimes ive had to sleep next to her bed or even get into her crib to get her back down- we dont want to be bringing her to our bed every night... cant sleep with her there. Bref we are just exhausted and consequently getting really on edge!!

Has someone had this happen with their once independent sleeper and figured out how to fix it??