This isn't your choice I am afraid, it is theirs and it is not an unreasonable one.
If you were all agreed to take the risk and be in a bubble together that would be fine but they aren't and you will need to be patient hard as it is.
I really wouldn't put any pressure on them, they are already worried and if you add pressure as someone who should be supportive it may cause a fall out
Lame Limericks (but they are funny anyway) (