Can Coffee Help with CFS and ADD Symptoms?

I'm not sure if today is just an anomaly. Have any of you with CFS and ADD ever drank coffee at night and felt somewhat more rested in the morning? Coffee does nothing for my energy during the day, it just helps me focus and feel motivated. BUT i drank coffee last night, a couple hours before falling asleep. (I had bought it earlier and forgot to finish it... didn't want to waste it!) I didn't sleep as much as usual, either. I'm still tried today, but i don't feel like my brain is dying like i normally do. I didn't wake up groggy, either. I almost felt rested and am a bit perked up. I'm wondering whether it helped me get better quality of sleep or something... It might have nothing to do with the coffee...but this isn't a normal feeling to me. (though, i should also be considering whether this is the beginning of a hypomania episode) So i thought I'd ask!......'cause if it was the coffee, this might be a good hack for me and others like me to actually be relatively functional during the day! I'm trying not to get excited. 😅 I'll probably experiment with it, anyway, and let you guys know if anything comes of it.