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 with self-prepared puree first. I steamed carrot/pumpkin/brocolli till super soft den i mashed it up. I gave solids twice a day (morning cereal, afternoon vege puree). In the beginning, i give a little bit to try first. With milk after tat. Can let him lie down on a bouncer to feed if cannot sit yet.