Hi all , my son is 7 months old and he has no t...

Hi all , my son is 7 months old and he has no teeth yet, I read on books that we can start on mashed food - instead of pureed, at that age. Should I wait till he has teeth or issit okay to get him started on the next level of food texture? I tried to mashed the pumpkin less smooth today and he gagged I was freaking out he was going to vomit. Thanks ladies.