You're welcome Khatera jan, if he is planning to do his Re-medical in India I would bring it up to the officer to be sure but I think he can do it there, it's faster as there are more offices compared to Kabul. It may take a week max to get an appointment from seeing the NDVO thread.
You know what else you could try which is worth a shot. Have your MP ask NDVO if they can send your husband the Re-medical request now. You know never know they may just email him that now if they wanted to.
What I had done was with one of the enquiry I had sent to NDVO some stuff from my recent trip to Kabul (like pictures, boarding passes, travel itinerary, etc) I also wrote a note that his Medical Assessment is expired and if he could re-do. I am not sure if they really sent his re-medical request after reading that or it was already planned.
For the Police Clearance I don't think they ask to redo it. No one has received that yet that I know of. So hoping they won't ask for it in the future either.
Good luck with the interview sister jan, Make sure you both go through the questions that are posted on this website, keep practicing the answers to make sure you both will answer the same thing. Memorize dates of every occasion.