Hugs @Glisten I can understand the overwhelm. One thing at a time, everything in its season and it's definitely not the season for painting. 

Furniture sounds like a longterm project and maybe a respite from other hard slog since you enjoy it so much.

Booking Gp would  be a priority to stay on top of physical and mental health - there might be more of a wait over the next few weeks so get in early. 

Centrelink and lawyer sound daunting so pace yourself. Are they time-critical?

I need to break down my own tasks too but it's hard to get my head around what needs to be done. Mostly decluttering and doing as much heavy work as I can.