I EBF my kids and introduced them to solid foods when they were 9 months old. We are Hindu and my mom is an ayurvedic practitioner. We did the following ceremony -
https://www.babycenter.in/a1016889/annaprashan-first-rice-eating-ceremony but in reality giving them full on solid food started after 1 year.
I nursed both my kids for 3 years each, so breast feeding is not an issue. They are naturally inclined towards solids. I also fed them cow's milk as they became older and wanted to drink from a sippy cup/bottle.
Most of the solid foods were homemade and I was basically mashing up real foods and reducing spices etc. My kids love to eat and are adventurous eaters. Stick to organic foods, especially in dairy, eggs and meats.