Husband frustration

Baby girl is coming soon!

We have a first name picked out, but every middle name I suggest my husband shoots down.

When I ask for his suggestions though, he says he hasn’t thought of any and doesn’t have a preference.

I made a list of, no exaggeration, 20 middle names I like and he said no to all of them!

I asked him to think of ideas whenever he has time, but then when I ask days later, he just comes up with joke names or says he doesn’t know.

Anyone else have this problem with their partner?