The article is about doing it again after not having done it for a while. If you've successfully done it before then you can do it again, especially if you don'

The article is about doing it again after not having done it for a while. If you've successfully done it before then you can do it again, especially if you don't let those skills atrophy. You don't need to be developing on a day-to-day basis to keep your skills sharp. A couple months practice sounds about right.