I'm 10 weeks PP (baby was born late August) and had a big/uncomfortable oversupply that didn't correct until about a month ago, resulting in a 300 oz freezer stash, about half from September and half from October. I'm still over-producing by around 8oz/day. I don't anticipate using any of it until I go back to work in January, and I'll be pumping at work, so I'm not sure how much of the stash I'll even need.

I've read that the breastmilk composition changes quickly as babies grow to accommodate different nutritional needs--so what I'm wondering is when does the window close for when my daughter could really stand to benefit from the early stuff? Should I donate it? If so, any tips or resources for how to go about donation would be much appreciated!