Starting solids. How much to give?

I feed my son a veggie every 5 days and then a new one. Then I moved on to fruits, you dont want him get to used to the fruit and not want the veggies. I gave him his veggie at lunch time but i never gave him anything else with it until he was older and ate more. Usually he ate only half the jar unless he was really hungry. He still had his milk all the other times. Good luck but the best person to help you know how much to feed him and when to feed him will be your son. The Best of Luck.