Hello girls, I want to start introducing solids to my 5.5-month-old ba…

Hello girls, I want to start introducing solids to my 5.5-month-old baby who is exclusively breastfed. I'm planning to buy ready-made purees and mashed foods. Please share your experiences on what you started with, when you introduced certain products, and how much you gave? How long can an open jar be stored? Can I give him a teaspoon in the morning and another one in the evening? My son has a strong appetite ? P/s: I know there's a lot of information online, but I would like to hear your advice here) Thank you all in advance ❣️