Someone with ADHD (adult) what do you do to deal with it and handle it? It's an hard time for me and I can't concentrate on anything I'm unable to read a book even cause I can't concentrate on anything neither a good TV show or YouTube video or music, it's exhausting.
Whole days can go and yes, exhausting. If can get going the momentum helps.
As to what to do. Timers. Different ways. Commit to small amount of time. Race to get as much done. Pomodoro technique.
Can also try heading towards bed at 9pm with alarm set for 5.30am, can use this time to indulge drifting or do things. Also very calm without chaotic rushed start to day.