Please, I Need Your Duas for My Grandpa's Healing

Salam everyone. I'm reaching out because I'm feeling completely lost and helpless right now. My grandfather is 89. Before this, alhamdulillah, he was doing his own thing, walking and talking normally. But he suddenly had trouble breathing and jaw pain, so my family rushed him to the hospital while I was away at uni. They kept how bad it was from me so I wouldn't panic. He was in the hospital for around ten days. Since he's been back home, he's become so much weaker. He tries to get up by himself to use the bathroom, but he can barely walk now. His speech is really slow and difficult, and it's hard to make out what he's saying sometimes. It just breaks my heart to see him struggle so much when he's trying so hard. The doctors checked if he'd had a stroke, but they didn't find clear signs. Some think it might be weakness from the hospital stay or the anesthesia, especially at his age. His CRP levels were also really high at one point. He's just not the same man he was before. Watching someone who was fine not long ago change like this is so tough on my whole family. I keep hoping and making dua that with time, maybe therapy, he can recover. Has anyone gone through something similar with an elderly parent or grandparent? Above all, my brothers and sisters, please make sincere dua for him. Ask Allah SWT to grant him complete shifa, to strengthen him, and to make everything easy for him. If you know any specific duas or anything I can do to help his healing, please let me know. I would be so grateful. Jazakum Allahu khayran for taking the time to read this.