The most important thing you can do right now is MAKE sure you have a viable backup solution in place for all of your WordPress-based websites.
There is no excuse not to! It’s free, painless, takes all of 5 minutes to set it up.
You can’t rely on your web host, no matter how good they are.
You can’t count on your web developer no matter how much you pay them.
You need to make sure for your own sake, that you have offsite backups that you have access to in case your website gets hacked, or your host has a hardware failure.