I think this is us...what should I do?

I've been frustrated and disappointed in a lot of my 1+ year of marriage. I'm pretty sure after reading this site and the book that my hubby has ADHD. I love him and I want us to to work, especially because we have a 2 month old baby and I know it will just get harder for me to keep everything going.

How should i approach him about this? What would be a non-threatening way to tell him that I think he needs to get evaluated?