My Son's Pediatrician

Sarah
My son, who will be 7 months next week, had his checkup yesterday and his pediatrician told me that I can start feeding him eggs, cottage cheese, yogurt and flakes of fish. I've always heard to wait until a year to feed babies eggs or cows milk. His pediatrician is very laid back and old school, which I like, but sometimes I think he's a little too laid back. Has anyone gotten the go ahead or started feeding their babies these foods yet?