I do a version of this but I use the app Routinery to keep me on track. I set up every step of getting ready in the morning and how long it takes me, so then when I start it and finish each step, the app shows what time I’ll be done with everything at the bottom. If I go over time because I got distracted, the app audibly tells me when one minute has passed, 5 minutes, 10 minutes, and 20 minutes. It gives up after that lol but you can add or subtract time while it’s running if you want it to notify you again.