Donate it! Join a local Facebook page for milk donors and give it away
Contact your local maternity departments/NICU and see if they take donations ☺️
Milk baths?
If your freezer temp is more like a deep freeze you can keep it to around 12 months. Keep it for diaper cream too and mix with mineral jelly and it treats diaper rash AMAZINGLY.
Is it regular freeze or deep freeze? Deep freeze can apparently be stored for a year!