I'm not sure that I understand your question.
Do you mean to talk to him alone, or to try to explain myself to other members of family without him?
My father is an adult child of an alcoholic, and he can't handle a criticism. He lie about every little thing; its like his some kind of survival technique or defense mechanism.
Anyways, some kind of tiredness cough me, too many times I was made the crazy one, too much foggy reality... Lately I find peace in my own space, limiting our family communication cause I am the one who is pointing things out and therefor, cause I am the youngest (even at age 31) , it must be that its not a big deal or it must be my imagination, or "the oldest knows best".
The best way I find peace is when I take some thing into my hand and squeeze it, feel its shape and heaviness, so I can confirm the reality of my perceptions. I guess that I am stopping being fixer creating a boundary.