I have an 18 month old who is on one nap after lunch, around 12.15 to 2pm or sometimes a bit shorter. Bedtime is normally 6.30 as she can’t stay up later, later means more night wakes. The issue is morning wakes can be as early as 4am and she is wide awake ready for the day. If we persist it can take us 2 hours to get her back to sleep for 30 minutes. We’ve tried a later bedtime and it made no difference at all. Any suggestions please?