When I was in the icu for an extended period of time I developed severe muscle weakness - I couldn’t walk and needed a machine to stand me up.. I developed neuropathy and still have some numbness and foot drop, well toe drop actually.
My neuropathy got 1,000 times better fairly quickly when I started using a Foot Massager Mat that my physical therapist recommended- it sells on Amazon for around 30.00 and it’s amazing !!!! It comes with the charger-simply place it in the floor, place your feet on the footprints( sitting ) and press the type of massage you want- please give it a try