H1B Visa transfer


I am on my H1B visa and got a job offer from another company and they have processed my visa transfer. Today I received an email that I got RFE for the specialty occupation.

As I do not have an educational degree in the area of work they have asked for an experience letter signed by a manager/HR from the current employer.

However I do not wish to inform current employer and get an experience letter for this purpose as it will be too risky. Is there an alternative to experience letter? Please suggest.

Thanks in Advance!