excess lipase

So i think I have excess lipase in my milk because the last few times I tried making a bottle for my baby from the milk I froze it smells and tastes sour! So now I think I have to throw it all away because I wouldn’t give that to my baby. I know people will probably think I’m weird for tasting it but I wanted to make sure before I dumped it. I have so many bags in the freezer that are all going to waste now 😔 I was gonna put it in my baby’s cereal but it smelled way too bad and I heard that it’s still good but I would never give my baby something that smells and tastes sour.