I'm sorry your low energy is interrupting your riding! I know from experience it's a terrible feeling

You've hit lots of ideas that the girls will help you with. I just have one other suggestion: talk to your doctor. Low energy can be a symptom of many different medical problems. As you experiment with different types of fuelling, new strategies for timing of exercise, for getting better sleep, whatever else you do, keep track of any other symptoms too. If you can't increase your energy on your own, those other symptoms will help the doc decide what to investigate.

Good luck!

Hugs and energetic butterflies,
~T~