She's usually up for about an hour and a half, and hour and 40 before this starts. The thing is, I've tried a couple of times to preempt the hissy fit by swaddling her to let her know it's sleepy time then putting her in the cot BEFORE she gets upset or before the hour and a half is up but then she lies in the cot fully awake and plays (looks alertly at everything, gurgles etc) until she is tired and or bored (not sure which sometimes) then screams. Same happens if i swaddle her as per usual but then just hold her in my arms- shes alert and happy then she's not. I feel like I can't avoid it.

I do cue feed, yes. It tends to be every two to three hours. If she's up and happy i'll let three, three and a half hours pass but any longer then that and I'll pop her on the breast even if she's not telling me she's hungry.

I've tried putting her on the breast if she's screaming at nap time in case it is hunger- sometimes it is but 8 times out of 10 she's not hungry.