Can I freeze milk that has been chilled in fridge for a few days?

Yup! I did that! But u might wanna do a taste test on your baby before doing this method and building a stash. I did that, and apparently I got high lipase, and my baby refuse my frozen milk. So much milk wasted! Now I will do milk math. If there’s enough milk for him to consume in a day, I’ll freeze the rest right after I pump!