PT started in Oct. 2021. So we are half a year into trying to get more independence. Using a cane in the house with me holding the weak , left arm is allowing my wife to walk to the kitchen, bathroom, bedroom. Ambulating a walker on a straight flat sidewalk is possible without support: the left had can hold on to it . After 30 min her left foot is not coming up properly. She needs a break. The risk of a fall his high and someone needs to be close all the time. Getting dressed is a challenge. The frozen shoulder has improved to an extent that getting out or in sweaters does not cause pain anymore. But lifting the left arm is not possible and thus dressing/showering/ bathroom is not possible without support. She now practices daily to pick up little pieces of plastic foam or corks.
The finger movements are limited.
She needs help 24/7 but .. the input we get from rehab physicians is similar to yours . Nerve regeneration takes time.