Re: Question about switching from formula to "toddler formula"
Since he is a year old he really can transition to regular whole cow's milk. My understanding is that the toddler formula is mostly just a marketing ploy so the companies can make more money.
We got some free samples of the En***row kind and I gave it to my 10 month old last week (it's for 9 months +). He only had 2 bottles worth but he didn't have any adverse reactions to it.
I would talk with your pedi to see if they think the toddler formula is recommended for your son, I know you get it through WIC but I'm pretty sure you can get regular cow's milk through the program too.