It's coming. This instance is deployed using lemmy-ansible but with some slight modifications. I need to review a few things to make sure the transition is smooth. As you also pointed out, it's also summer time which isn't helping with my free time situation.
I have a long term solution that will speed up upgrades but I only expect to get it in place by the fall. In the meanwhile, I'm planning on getting this instance upgraded to 19.5 in the coming weeks.