Mommies I need answers ASAP!!! My 8 month old was on Enfamil Gentlease but WIC messed up last month…

Mommies I need answers ASAP!!! My 8 month old was on Enfamil Gentlease but WIC messed up last month and gave us the regular Enfamil so hes been on that but just a minute ago I accidentally pour a Enfamil Gentlease (ready to go) packet in his enfamil container so both formulas mixed. Is it okay to give it to him? Will it upset his belly?