Husband not excited about baby

I am 38, expecting baby #2 and husband isn’t excited because he’s so anxious that the baby will have chromosomal abnormalities due to my age. He doesn’t want to share with anyone except immediate family. Our 1st was conceived via IVF and we have 8 genetically normal embryos still on ice, he said that’s why he wasn’t so nervous the first time around (though he still didn’t seem super excited then either, he was even playing games while I was in labor). Just feel like he’s taken any excitement away from this blessing since we were old we had a 10% conceiving with one Fallopian tube).