Reddit mentions of Goodnight Mind: Turn Off Your Noisy Thoughts and Get a Good Night's Sleep

Goodnight Mind was very helpful to me and it has also worked for those I've shared it with. It is a great guide to quieting your mind so you can sleep.

Given that you do Sleep an extra half hour on the weekends and that you wake up an hour and a half later, I'd say that's your issue. What's probably happening is that because you're getting more sleep on the weekends, your sleep drive is modestly diminished the first couple days of the week, hence you're not sleeping as deeply and more likely to wake up in the middle of the night. The different wake up times likely isn't helping either, as Sleep is surprising sensitive to routine and consistency.

Also, since it sounds like this has been going on for a little while, you've probably developed some Sleep anxiety. It's not that you have a phobia or some kind of major anxiety, just that early-week Sleep has now become a thing you think about and worry about, both of which are arousing and therefore harmful to the quality of your sleep.

If you haven't already, try and experiment for two weeks and see if things improve: Simply keep your workweek schedule for the weekends as well.

If you want to increase your odds of better sleep early in the week even more, stay up an extra half hour or hour later than you normally would on Sunday evening (while it sounds paradoxical, mildly Sleep depriving yourself will increase your sleep drive and therefore the quality of your sleep, which is a worthwhile tradeoff even if it's at the expense of some loss of quantity.

This book is really good for legitimate tips on improving your sleep.

Hope that helps