Supposedly he now supports the Church teaching on contraception. But he was still working for the infamous and anti-Catholic Rockefeller foundation at the time when he would have run out of opportunities for fatherhood.
The prior FR thread linked above mentions his Templeton prize speech in the 1990s when he was already well into his neo-con phase. He cannot claim to be young and naive (although he was 35 even back in 1968 when he wrote about "intercourse every day or even more often"). That speech is a masterpiece of Straussian misrepresentation which mentions "Jesus" only once, and that within the Straussian Athens-Jerusalem context. He never mentions whether he has any personal faith whatsoever. God forbid the words "Catholic" should come out of his mouth. And this is when he is accepting a prize for "progress in religion." Lately they have been giving that prize to left-wing atheists. Looks like Novak was ahead of the pack once again.