I was fermenting FWK Black Cherry. After 15 days and reaching FG 0.996 (for 2 days didn’t move) I added packet D and superkleer. I degassed pretty well too. I added I bag of conditioner that contains sorbate. 2 days later I noticed it is still bubbling in the carboy. What did I do wrong? Should I wait longer after getting 0.996? I’m not experienced with kits. This is my 3rd kit but I fermented a lot of country wines and after adding kmeta and 1/2 tsp per gallon of sorbate my wines never started to ferment.