I am trying to do this now. I extending her A time before her first nap and she seemed to go to sleep more quickly and in to a deep sleep more quickly, however she did wake up after 40 mins. I continued to do this throughout the day and make sure she had an extra nap before feeds where possible, so two of her feeds were 3.5 hours since the last one, the others were 3. This may have messed up tea time and bedtime naps and feeds as I wasn't sure what I was doing then. I fed her just after 5, which was 3.5 hours after last feed, instead of the usual 2 hours, then gave her A time and got her ready for bed. However, I think I kept her up too long. I fed her before putting her to bed and by then it was 1 hr 35 mins since she woke and she seemed wide awake. It took about 20 mins or so to get her to sleep and then she woke up after a few mins but hasn't woken since. We will see what tonight brings. I hope it can't get any worse than last night! thanks for your help btw, it is much appreciated.