ve started sitting on my chair backwards, with the
back against my
chest and my legs straddling the seat. It seems
to help a bit (although it kind of hurts my boobs, but not as much as my back) and it won't last for long, again because of my belly, but if you have an armless chair like mine, maybe give that a try? I know some floor exercises that help my back too, but they're not helping as much anymore.