How much should a 5 month old be eating?

Sometimes I think I'm over feeding.. I go through 9 cans or so of formula per month is that too much?

Please help first time mom here!

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    Trema
    My daughter is on a 25-30oz goal daily. She is now 8 months old, but this has been her norm since 4 months when we introduced cereal and baby food
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    About Crisel Casanova
    Birth: October 31
    On Moms.com since: Mar 8, 2014
    Happily married for about a year and a half, and im a new mom. I live in Puerto Rico, however I'm from Costa Rica and dont know a lot of people here except my husbands family. I hope I can make new friends and share stories with other moms.