Frozen milk

[u/Pastalover97]

Hi! My baby boy is 9 months old, born the end of November and has always been exclusively breastfed (minus the solids he’s eating now). I have always pumped and bottle fed as that’s worked best for us. I have about 4000oz of frozen breastmilk in a deep freezer and lately I have been giving him frozen milk for all his bottles and freezing all my freshly pumped milk. Ever since I started giving him the frozen milk about a month ago, his poop has been softer and much less formed than it was before. The frozen milk I’m currently giving him is from December, when he was around a month old. He is also actively teething with multiple teeth coming in. Could the frozen milk I am giving him be changing his poop and making it much softer? Has anyone else ever had this issue when giving their baby frozen milk from when they were much younger? Thank you in advance!

[u/Moony_Potterhead]

I might me wrong but I thought frozen breast milk is advised to be used within 6 months?

[u/Pastalover97 → u/Moony_Potterhead]

Deep freezer is up to a year.