Health and illness are a blessing from Allah Almighty. However, as weak believers, we become troubled by the blessing of illness. We suffer a lot. There is no opportunity to take any disease lightly. Since you have pain in your knee, which makes it difficult to walk and sit. I pray to Allah to grant you a speedy recovery. And to grant your mother a speedy recovery from her neck pain. Take medicine on time and wait patiently, Inshallah you will recover.