Is he making excuses not to see our kids?

So on sunday me and my babies dad were supposed to meet to exchange the babies. But he changed his mind the day of saying that he was feeling down and he’ll get them next time. Well yesterday he said he wanted to get them but this morning he backed out. Which is fine i just was wondering if this seems strange? Plus he said he needed to renew his guard card but it doesn’t need renewal until 2 years and it’s only been one. Btw we’re not together he just uses the word “ bae” a lot