Mask mandates in indoor public places should continue until all who want a vaccine have one. But this implies not just availability of a second shot to all over 16 at least, but a few months of hard outreach to those for whom it is hard to get the vaccine (those without internet access, without a car, without the ability to take time off work or go out of their way for a shot). That does not mean converting those against vaccines. It means making vaccines readily available. As for offices or something well it's a much more limited demographic, so everything that applies to the broad broad demographic of the general public may not apply, employers could offer vaccinations at work to any who have not received them, and sure masks mandates could be dropped.