If it were mine, I would just continue to position it indoors by your warmest/sunniest area and kept dry. It will continue to drop its leaves. Looking at it, it has already started to go dormant. Even if it continues to bloom it is dormant, unless you actively see new leaves forming.
My Adeniums usually start to wake up when overnights are more stable at 50F and daytime highs going 75F and higher, light levels going longer duration. So I really have to wait patiently for outdoor conditions to warm up nicely.
