Self Employed Medicare deduction

I am self-employed and on Medicare.  My husband was still working in 2020, and also on Medicare.  When reading about the possibility of taking the Medicare  premium deduction because of being self-employed, this paragraph was unclear to me:

 

"To qualify,  if you (or your spouse if filing jointly) was eligible to participate in an employer's health plan during any given month – even if you declined the coverage – the premium you paid for that month cannot be claimed under this deduction."

 

My husband was eligible to sign us up for health insurance at his work but didn't because we are on Medicare.  Does that mean I can't take the self-employment Medicare premium deduction (under other expenses)?  Thanks for any help understanding this.