You can start now but make sure to start with home cooked food 🙏🏾 and for dry food pedigree is not a good suggestion, royal canin is good👍🏾 but again home cooked food with lots of veg is good...👍🏾

After 12 month gradually add adult dog food in his current food

U can give now also but parallely u should have to give homemade food also