For me, as my tabletop work is very much a labour of love, I’m very wary of burning out (my day job is a video game developer).
As such, I tend to aim for one large release every year, and 1-5 smaller ones when inspiration strikes. I’m by no means a commercial success, so take that as you will. In the past, I took on a number of other tabletop related projects (podcast, talk show, etc, etc). It was all definitely too much.
Try to identify what and how much feeds you and do that. And don’t forget that your body doesn’t really know the difference between fun stress and unfun stress.