I don't know if the "Florida clinic" that you refer to is the "Institute of Neurological Recovery" (Boca Raton, FL Office | Institute of Neurological Recovery).

If so, I would be very cautious about it - Dr Tobinick has several such entities.

In my view he makes a number of unsupported claims about the alleged benefits of Enbrel/Etanercept for a wide range of neurological conditions and charges a lot for this alleged therapy.

You may find this commentary helpful in this context; Enbrel for Stroke and Alzheimer’s << Science-Based Medicine.