At what age did you start introducing solids? What brands were given f…

At what age did you start introducing solids? What brands were given for baby food, like Fruto Nanny? We first give 2 tablespoons of broccoli after feeding the child on infant formula completely, the next day, already 2 tablespoons and so we add 1 tablespoon every day for 10 days, and so all vegetables, then all cereals, meat, fish. Did I write it correctly? At 8 months, do you give pieces? Then how do you feed them after introducing these foods? We gradually reduce the portion of infant formula.