Anybody starting baby on solids at 4 months?

I’m just wondering. My pediatrician told me when I had my last one it was okay at 4 months to introduce solids. But I waited awhile because he wasn’t interested. But my new little one is VERY interested in food.. I’m just not sure I want to start him on solids just yet. (Yes I know, some say 4 and some say 6).