i would suggest checking out the brili app it was originally developed to help kids build routines   the adhd community amongst other adults has expressed to the developers how much it helped and theyre actually working on a version tailored to adults  you can do a free trial for 14 or 30 days cant remember the hardest part is setting up a routine and actually starting it lol but there are some premade ones   there are 2 main things that i think make it work first each task has an associated time and you set a pre determined end time this means that when you take a little extra time on one task dont sweat it because it adjusts the time you have left proportionally to each task  second there is the ability to skip a task i appreciate this one for when theres that 1 thing you just cant bring yourself to do that morning so now you can decide to leave it until the end if you have the time and you will still do it because the app wont let you forget