Hi chgodave, welcome to the forums.
First of all, congratulations on being sober, it takes guts!
About your card. It’s great that you were able to qualify for an unsecured card after having your capital one for just a couple of months. I’ve had mine for 9 months and still haven’t tried applying for other cards yet (I’m trying to clean up my report first).
I don’t think you should worry about those 3 hard inquiries. I’ve read that having between 2-4 is ok.
Have you seen any improvement in your credit score since you have the two credit cards?