My Dad also was not supportive for the first five months after I told him. He thought I was "mis-recollecting"(as opposed to lying). Maybe he also thought I was also using childhood sexual abuse as an excuse for some terribly hurtful things I've done in recent years. Luckily my therapist and wife have been incredibly good about keeping me focused on my own recovery, doing it for myself and my future life. You are very brave and doing the right things. I hope your dad comes around. Mine eventually did, somewhat. Regardless you can make progress ... Keep at it!