Need H1 to F1 Help Transfer Help !!!

Please Let me know if you guys have change your H1 visa to F1. Couldn't find the job for last 5 months so I want to go back to grad school but I don't know how I can change to F1.

Please Let me know the process and if I need to go thru lawyer...the name of the immigration lawyer that you know of.

Looking forward to get the reply.

Regard,

PNepal