Is my baby allowed to eat Gerber Baby food? He is 6 months now but I am worried if they’re not allowed for G6PD Deficiency babies.

OK, however... The main food that those with G6PD deficiency should avoid is fave beans, but some should also minimize soy, other beans and blueberries-it depends on the subtype of G6PD def.: see https://draxe.com/g6pd-deficiency/
Gerber is OK, esp. their organic line, but consider home-made baby food too. Don't start with rice cereal. Mashed avocado is a good first food.
See https://tinyurl.com/y9jhmsbp.