Mood swings are probably going to be another diagnostic issue in ADHD. Mine have qualified for bipolar disorder.
The last weeks, I have been very busy during weekdays, Very interesting and engaging. Then my energy and engagment spiraled up, and tiredness down. When the weekends came, i was tired but restless, buzzing around on Saturday, before settling down on Sunday.
If it lasts longer it may turn into hypomania, but not this time.