I recommend speaking with your primary care doctor
. Scabies, as you probably know, is an infection of the skin caused by a small, microscopic mite that burrows under the skin. The red, itchy bumps that occur as part of the scabies infection are primarily the body's inflammatory reaction to the eggs and feces of the mite that are left deposited under the skin. This is why the bumps and the itchiness may still continue for a while after using a medication like Permethrin, which kills off the living mites but does not immediately remove the deposited material from under the skin. Therefore, based on what you are describing, it is possible that the infection is resolving but you are still experiencing some residual inflammatory reaction that should continue to subside.
On the other hand, it is occasionally possible for the infection not be totally eliminated. This is especially the case if mites that are living in clothing or bed sheets are able to get back onto the skin and reestablish an infection after treating with the medication.
I would recommend touching base with your primary care doctor about this issue. They'll be able to examine your skin and help you figure out whether you still have the infection or not.