Cauda equina lesion is an
incomplete spinal cord injury characterized by damage to the nerves located between the first and second lumbar region of the spine, resulting in partial or complete loss of sensation. In some cases, nerves regrow and function is recovered.
A major factor in this possibility would be for you to maintain muscle function and continue nerve stimulation.
In the past week there's been a lot of news about an
exoskeleton suit available for wheelchair users who have good arm function. There is the thought that something like this will not only allow you to walk in the time being, but also strengthen muscles and train your nerves for solo walking someday. It is pricey but worth checking out. If it's out of your price range, just don't give up on your physical therapy, there is hope for the future.