This is a setting in most of the clients, including Jerboa

You can set Jerboa to show subscribed posts by default. Just adjusted that myself after getting annoyed that it resets every time.

I seem to be able to sort my feed by subscribed, local instance, or all instances on Jerboa as well but might give liftoff a look as well. I’ve come across from baconreader and would be keen to set something up that looks and operates as closely to that as possible.