Overproducing help

Okay I'm currently kinda lost about my milk supply. I produce a lot and we have now ran out of freezer space I have about 70 litres in the freezer right now. I don't want to stop as I want my son to be using my milk till he's at least a year preferably a little longer. However since we have no more space in our freezer my husband wants me to completely stop my supply.. but I know 70 litres isn't enough to last him to a year he is currently 2 months. I also know that pumping more will just go to waste..also buying another freezer isn't an option as they are too expensive and I've looked for second hand and those are also to expensive. I don't know what to do. It is currently a constant fight between my husband and I, but I just want to provide for my son, it was always our plan for me to supply for my son till he was at least 1. But I'm torn now since my husband wants me to completely stop my supply, and if I do that than I won't be able to comfort breastfeed him anymore and that makes me really upset and feel like I'm failing as a mama...