In my experience it was about 3-4 weeks of forcing 100% use before vim became more effective than regular text editing, but a lot of the pain was gone after ~1.5 weeks.
Then you know it for life. Unquestionably worth it.
It only took me like a week to get used to vim. I obviously still don't use it to its full capabilities but i can use it like a normal text editor now.
Then you know it for life. Unquestionably worth it.