I am not a doctor or therapist, but here’s a thought: have u tried e-stimulation?   (E-stimulation is recommended for soon after a stroke.)  However, if u can weakly move it, & u are just weak, but capable, so u may be interested in trying constraint therapy. It’d be super frustrating, but if you can somewhat move your weak side, it may be worth a shot! To do constraint therapy, u force yourself to use your “weak side”.  If it’s an arm that u want to start using, u might put your good arm in a sling & don’t use it — I think it takes at least 2 straight weeks–& it’ll build the muscles in the bad arm.