Since the post about anxiety dreams I haven't had another one.
I have been reading this from 'Calm' . Sleep habits are certainly a fascinating topic and I have several friends and close family members who really struggle with sleep so I like to think I have an element of understanding.
It could be somewhat disingenuous to credit mindfulness practice to stopping anxiety dreams, but I definitely believe that breathing and meditation can be exctremely beneficial. I woudl go as far as to suggest seeking medical support should sleeplessness/disturbed sleep patterns become problematic. As a female going through menopause with hormones doing their own thing there are things that my body is doing that I have little control over. I have seen so many benefits and improvements to my sense of wellbeing as a result of embedding practices into my everyday life .
So, try breathing exercises before going to bed, try a body scan or other meditation either in bed or just before going to bed. It will help to build routines and develop practice and might even allow for a longer and deeper sleep.
This article from mindful,org has lots more tips and suggestions.