Hey i have adhd too and have faced the same problem.
So I created an app just for this. You can try it at https://www.speakreader.com. Since you have adhd i suggest you go with at least 2x speed. I usually read at 3x speed just fine. At this speed your mind can't get distracted with other things. I read almost 1 book every week using this nowadays.
Fyi, the app is 100% free but you will need to enter your own Google wavenet api key for text to speech engine - since it billable over the first million chars by google so I can't give them away with the app.
So I created an app just for this. You can try it at https://www.speakreader.com. Since you have adhd i suggest you go with at least 2x speed. I usually read at 3x speed just fine. At this speed your mind can't get distracted with other things. I read almost 1 book every week using this nowadays.
Fyi, the app is 100% free but you will need to enter your own Google wavenet api key for text to speech engine - since it billable over the first million chars by google so I can't give them away with the app.