Hi sleepyj and welcome to the forum!
I wake lots with leaks (full face mask) and/or remove it in my sleep.
This is not unusual! The body needs to get comfy with new experiences!!
It does take a bit of time to adjust to the difference in the depths of your sleep cycle ... not waking up with loads of apnoeas every hour is a very pleasant surprise for your body!
Keep going, you've made a very good start, and it will soon start to feel more 'normal' as you continue to use your CPAP.
I know it can feel very frustrating not to get an 'instant' feeling of well-being after having gone through all the diagnosis, fitting for your machine etc, but I am sure that better sleep and therefore a fuller and happier daytime is not far off. Keep posting, we've all been there!