11 week old eating less...

Je

My baby boy is 11 weeks old today and he’s 16 lbs 25 inches long. He went from eating 38-40 oz a day to now eating 28-30 oz and it’s been like this for a week or so.

Has anyone experienced this with their baby?

Other than sleeping a little longer during his naps, he’s happy and healthy. I’m just not sure why suddenly he would be eating less. He got his shots but that was two weeks ago.