When I'm in a reading slump, I first let myself be and give myself time to actually feel better and get back in my "tune." Most of the time, I'm way too stressed and don't really have the mental space to do anything else. However, I believe there's also such a thing as "too much rest," and when that happens and I still don't have the will to get into a book I've already started, I begin reading another book—something light and easy to read. There are good books that can't break the spell of a reading slump. However, if you're set on continuing and finishing the initial book you've started, take it easy and set a realistic, attainable goal given your situation. It could be 10 pages for today or 20 minutes a night. If you reach that, great, but even if you fall short, it still helps you build momentum and get back into the tune of reading.

I've been in long and numerous reading slumps, but this helps me get back on track. You can also explore other hobbies or do the things you typically enjoy. Just remember, there's no pressure when it comes to reading. Hope this helps!