I have a small one (not bloom size, and not sure how far away from bs it is) - it started going downhill last summer, I think it was staying too moist (I had it in chc in a plastic pot).
Roots were pretty well rotted. I then repotted into straight pumice, and have the pot setting in a saucer of water (passive hydro) during warm weather. It rebounded extremely well with lots of new growth and new roots. Over winter I skipped the saucer of water, and just watered regularly. It's in a south facing window with no signs of that being too much light. Can't help with the blooming tho, sorry