Dedicate yourself solely to one task. Set a time limit and keep to it. Block any distractions or rail breakers and keep hammering at it until you reach the end of the allotted time.
The most productive people don’t multi-task.
J. Westenberg 🌈
997

This hits the nail on the head. I might make the list of what needs doing, but after that its allocate a time for each and do them one at a time and do them well.