My baby 6 month baby doesn't poo and I have introduced him to food now is it normal too like breast feeding.
It's likely your baby is constipated.
Their should be a regular bowel movement after exclusive breastfeeding.

Since you have introduced complementary food, kindly ensure you mix baby feeds (formula and cereal) with the accurate quantity of water. It is also important you give balanced meals with fruits and vegetables as well as food rich in fibre to avoid constipation. Give water during feeds and during the day intermittently.