EBF/EP: How much milk are you able to freeze per day?

HopeNotLost

I breastfeed, but give 1 bottle of bm a day (gives DH a chance to feed her, and gives me a break), but I will pump during that time so my body knows to continue making milk.  I also usually pump after her morning nursing session.  Each day I am able to freeze about 8-12 oz of milk.  I am just wondering if this is normal, or if I should be freezing more?  I SAH, so the only reason I am getting a stash built up is in case I get sick or if I will be away for a long period of time.