Dear friend, welcome to HCM!
Is he on these two medicines only?
There are no NSAIDs in your description and these 2 drugs are not pain killers.
I think you should take a second opinion
and start NSAIDs under appropriate guidance if pain still significant.
Get a physiotherapist help to learn the corrrect exercises.
Take care and please keep me informed of your progress.
I hope to have answered your query satisfactorily.