Kindly refer to the following link(s):
How to help the elderly make wudu and pray if they are suffering from old age and forgetting?
Can a very old & sick person pray without wudu, what about the prayer of a senile person
Suffering from Urine incontinence, can I combine prayers? (full video)
Can a person who is bedridden be excused from prayer if he / she cannot perform wudu
How can a bedridden person pray if he cannot make wudu? bedridden, soiled with impurities and IV