I would feel like this too!! Always tired with muscle pain and fatigue. Taking inositol and switching to black tea has really helped both fatigue and pain. High caffeinated beverages are a slippery slope with crashes and burn outs

I’m currently taking the brand intimate rose which has the combination of myo-inositol and d-chiro-inositol 40:1 ratio which studies have been proven to show most effective with PCOS related symptoms. Might take a couple of weeks to see the effects though, but it’s really helped

Maybe Yerba Mate can help. It's often found as a tea or supplement.

vitamin B12 can help! also ensure you're hydrated! water can give as much energy as coffee if you're already dehydrated