How to start solid food for my LO? He is turning 6 months next week. And I wonder is it once he is 6 months he should eat puree or porridge? How to schedule his meal?

I started mine with Apple purée when recently when he’s 22 weeks. And slowly introduce other purée such as pumpkin and avocado. He loves his purée, I also gave him Sishen brown rice cereal too.