Welcome back, Jack! I went nearly 2 weeks without writing in the late spring - not an experiment, not laziness, but illness was the reason. My mind and energy needed to be focused on my physical needs. When I finally returned to writing, it was a start-and-stop effort until the flow returned but even then, it took me at least another week to be able to write with ease. Like anything else, our writing skills get rusty when they aren't used!