My friend, I believe that you are doing your ADL's likely just fine. It sounds like you are only having trouble with some (and not even all) IADLs. That is, "Instrumental Activities of Daily Living". The core ADL's are are being able to feed yourself, go to the toilet on your own, and dress yourself.
The advice you received are tips that have all helped me. I even recommend the music that was mentioned, but I add "dance cleaning" to that. Can you imagine what I mean? If not, I wish I could show you.
The other day, the topic of simplification came up. I recommend that again. One pot/pan meals. Paper plates, if necessary. Dishes straight into the dishwasher with no "stopovers" in the sink.