The True Blood star is expecting a child with wife Anna Paquin. While he has two children - son Billy and daughter Lilac - from a previous relationship, he revealed that he is a bit out of practice with children.
"Anna's brother's got two wee ones, so we see them a lot and I keep my hand in, but it's nice to give them back after a few hours," Moyer told The Guardian.
"I can wave goodbye to that now," he continued. "I'm kind of dreading it but excited as well."
Moyer went on to say that he is looking forward to returning to London for the Olympics.
"True Blood season five finishes shooting next month," he said. "I'm hoping the stars align because I desperately want to be there when it's all happening."
True Blood returns for its fifth season on June 10 at 9pm on HBO.
> 'True Blood' season five character posters: 'Everything is at stake'
Watch a promo for the fifth season of True Blood - featuring Law & Order: SVU's Chris Meloni - below: