I feel that she is getting more OT as the day progresses, leading to the unsettled nights. Wakings soon after bed in this manner generally indicate OT. A few suggestions - stick to a fixed WU & BT. After a short nap (less than an hour) reduce the A by at least 15 minutes before the next nap to avoid OT. Try and get that catnap any which way - be open to APOPing it in a sling/pram even. If it simply isn't happening, get her down to bed earlier than normal. This is where the main problem is happening. Her reflux is definitely under control, hun? Reflux can't be playing a part, right? Also, when she wakes after 45 minutes during the am nap, is it possible to settle her?