Hi welcome to H.C.M.Forum. it w may not be the roter cuff you have suffered before.
it could be cervical spondylosis
causing pressure on the nerves supplying shoulder, arm, forearm, hand.
i advise you to consult an orthopedic surgeon for diagosis and treatment.
you may need to get the CTscan done for confermation and to exclude rotter cuff.
besides you avoid eating potato other tubers tamato coconut egg chicken and sea foods.
dont worry you will be fine.