Any anons with ADHD here? How do cope with it?

I'm not sure if I have ADHD, but it goes like this with me:
>find an interesting topic
>go into hyper focus mode, learn it
>find something else more interesting along the way a week later
>want nothing to do with previous topic, completely disregard it

Do I have ADHD? I cannot focus on things if they are not interesting to me right now, even if they are very important, like work. I'm at my first job, at the beginning I was super excited about it, but now I just find myself procrastinating and getting distracted, avoiding my tasks.

What do?