Other wic users

Kela

I went to Walmart to buy my son his s formula but they only had 6 cans left I'm allowed to have 9 my question is can I go to another store and pick up the last 3 cans or did I just mess up by buying these 6 cans and now I'm not able to pick up the remaining cans for the month .

Please any information is appreciated I tried looking online but did not find anything useful