Long story short, My once robust freezer stash is slowly dwindling, and I think will get us to around 11 months-ish. I am trying to work on pumping and supply issues. I pump around one bottle's worth, baby takes two bottles while I'm at work. Exclusively BF on weekends is no problem. The last couple of weeks if it comes down to it, should I introduce some cows milk a little earlier, or should I introduce formula, then transition to cows milk? WWYD?