I would make two reflections here, keeping in mind that I have never worn a chastity bra and hope that I will never have to wear one.
First reflection is that I have read here in the forum that the rules for daughters are usually stricter than when only the mother wears it because the girls are not yet of age. When girls have to start using it, if mothers and daughters have the same rules, the demand is higher, so it is possible that you incur punishments more often than before, since your rules, I guess, will be less lax because you have told us that your husband has decided that everyone at home have the same rules.
The second thought is that if the bra is already present, keyholders always tend to want the most security, not the least, so talk to your husband but from my experience here he most likely has it in mind that you both have to wear it with some frequency.
I still don't understand the philosophy of the bra, and I'm always very much against wearing one.
