Recovery after a year...

A year ago my dad (58 years old) suffered a c3-5 incomplete spinal cord injury, central cord syndrome. He was vented for two months and slowly was weaned off that. He had a baclofen pump implanted recently and that has helped with his spasticity in his legs. He also gets Botox in his arms. He leg movement is better than arms, he can lift both feet about 5 inches off the floor when seated, has good core strength, enough to come forward in his chair and can stand with one person assisting. We basically rock him and support him with balance. His left arm is more mobile. He can press the button his his iPhone to access Siri and can unlock the left side of his wheel chair. He can't bring his left arm up past his chest due to spasticity which prevents him from feeding himself. He can use a mobile arm support but still need pretty hands on assistance positioning the bowl. He can drive a power chair pretty well using his left hand. He is in therapy five days a week and we haven't seen much improvement lately. He really wants to walk again and get more movement in his arm, even if it's just his left arm.

Any one out there regain movement like that after a year? I've read the first year is the most important and that is when you see what will come back. I really hope there is hope for more recovery but it is hard not knowing. What kind of things came back after a year for other people living with a SCI? Any advice for how we can support him physically or emotionally?

Thanks in advance!!