We started T on solid foods a week and a half ago and so far it's going great. She is eating puréed peas (home made) and canned pears and sweet potatoes. I made her purées from garnet yams and sweet potatoes (white flesh, the can is orange). I've heard to introduce a new solid food every 3 days. So should I follow that rule for these other potatoes or am I good to give her any of them? Has anyone ever heard of a baby having a reaction to different brands of the same food?

I feel like I am being a bit of a stickler since M is gluten intolerant and I have a nut and egg allergy. Thank you.