Just to update you, I have managed to stretch the A time on a couple of occasions before her pm sleep which has extended the sleep so thanks for that advice. On other occasions it hasn't worked but as she seemed quite happy when she woke I've assumed she maybe didn't need anymore sleep.
I decided to try dropping the dream feed to see if that helped with night waking and for a few days it did as she was waking about 1ish for a feed and then slept through for the rest of the night. however the last couple of nights have been awful again. She has been waking at 2/3ish and transitioning through from being happy but very awake, then moaning/crying, then more settled but awake, then finally falling asleep by herself for about 15 minutes then waking again and cycle above starts all over.. and this carriers on for nearly 3 hours. She usually drifts off by herself at 5.30/6ish. I'm not allowing her to sleep in to compensate during the day and i'm still making sure she sticks to schedule above. She is drooling a bit and everything is going in her mouth at the moment. She also has a constant snuffle at the moment. I'm not sure if the night waking sounds like teething? She seems quite happy during the day and has no difficulties with sleeping then. Anybody have any thoughts? Gave her teething powder and paractemol last night incase it was that at the start of her being awake but it didn't seem to make any difference.