Buster's Evil Twin

I am the world's best boy. I never, never bark unless someone is coming to the door and then I shut up right away when Mama says it is ok.
That was the old Buster!
Gradually, my evil Twin Within, Bruiser, has been coming out. It started about a month ago, with barking in the afternoon about 4 PM for playtime. If Mama couldn't stop and play, the evil one started barking.
Now last night, the worst!! That can't have been me barking for 30 minutes after Mama put me in the crate for bedtime?!
I haven't done that since my first night in my forever home, just about a year ago. What is happening to me, and how can I stop it? Indy Paws Friends please help me. I don't want to interrupt Mama's beauty sleep. She needs it!