Probably the dutasteride that speeds up your loss. Seen many cases on reddit of guys going on dutasteride from finasteride and losing ground when they were stable on finasteride and even maintained and also had better hair on finasteride. One guy even swiched back to finasteride and got hair regrowth. U may have kept balding on finasteride but dutasteride may speed it up for you. When I was on dutasteride my hair got destroyed after 1.5 years once I quit my hair thinned alooooot slower. dutasteride raise scalp T alot more than finasteride.