I use a one-on-one personal trainer. Thus far, he’s legally been able to continue to work with customers in his gym, but that could end any day. I workout Monday, Wednesday, and Friday, and this past Monday I asked what he would recommend as a “maintenance discipline” for me if he had to close. He put some of his weights in my trunk and told me what to do to keep in shape. I was impressed and thankful.
What weight are you providing for your best clients? Are you suggesting actions for them individually, not just en masse, that will make them appreciative and eager to work with you again? All you have to lift is your phone.