So has anyone made their own baby food? I'm seriously suggestion doing it.. But how earlier can you…

So has anyone made their own baby food? I'm seriously suggestion doing it.. But how earlier can you make it and freeze it for? Any advice. my doctor told me today she wanted to starting my baby on solid foods at 4 months and he just turned two months today. But I was just wondering cause summer is coming and fruit and vegs are going to be on sale let me know please (: