Struggling to Keep Focus During Prayer Because of Racing Thoughts

Hey, just wanted to share a bit about my situation. I've had ADD since I was a kid, and I also reverted to Islam about two years ago, alhamdulillah. Recently, I found out that not everyone has a non-stop inner dialogue like I do-mine runs all day, whether I'm asleep, working, or even during my Salaah. My main issue is staying present in my prayers. It doesn't take long before my mind wanders to things like 'When I finish, I need to do...' or 'I wonder about...' even though my body and voice are doing all the movements and recitations as if everything's fine. I'm really concerned about whether my prayers are valid because of these constant distractions. I always try to refocus by concentrating on the words of the prayer, but it doesn't last, even when I'm careful with my tajweed. Does anyone have any practical advice or tips that have helped them stay more engaged and mindful during Salaah? I'd really appreciate some guidance from the community, in sha Allah.