These things are key right now.
So actually, enforcing a regular wake time with plenty of light exposure is going to quickly help your body habituate to a regular ‘re-set’ time.
Eventually, if you do both of these things regularly, you will start to notice waking up gets much easier, and you start to feel sleepy around the same times each night. These timings though, might look different to pre-menopause for you. Try not to have expectations based on pre-menopause.
Your body is going through a lot, and rest and sleep will be important, however forcing it to do things it clearly doesn’t need right now is unhelpful and can make sleep problems worse. Imagine if you let go of your expectations and rather go on how you feel?
Sometimes comparisons can lead us into all sorts of random behaviours that only tend to increase our anxieties when they don’t work, such as lying in a dark room trying to will sleep to come.