Im 47 diagnosed at 43 .. My daughter was diagnosed 4 months after I was she's 22 now .

Yes I felt guilty and my daughter told me to go stuff it Her and I share our goofy Bipolar moments, We share the ups and downs and altho she now lives 750 miles away our mood shifts are about the same.

Dont beat yourself up, He's in treatment and he will learn ways to manage life while having Bipolar.