Sorry to hear. Regalia is said to be a good systemic preventative but it has not been perfect for me. Good luck!
I appreciate the sentiment, I will look into Regalia. I am extremely confident this happened because I had very low air exchange, dense buds, and "dried" on the high end of the scale 65/65. I believe if this started in flower, it would be much worse by now.
My flower tent becomes my dry tent, and it shares a lung room with my veg tent. The veg plants were struggling with low temps and humidity, so I put a heater in the veg tent, thinking the ambient lung room temp wouldn't be heavily affected. When the temp stayed steady at 65 and the humidity plumitted, I set the exaust to turn off when in the "optimal" zone and when it would kick on, it would be a 2 out of a possible 10. This is only my 2nd winter harvest, and it was extremely educational.
I believe what I should have done is hang them to dry in another part of the house with a fan moving air around, and check them daily, perhaps using a rack or bag method after a 4 or 5 days in the cold/dry spell we were experiencing. Perhaps removing the buds from the stem all together would have spared them, idk.
If I was a heavier smoker, I would be devastated, but I am just on a quest for quality keepers for personal enjoyment and potential future breeding. The time and effort spent hurts, but I learned alot, so it wasn't a complete waste.