It's not weird at all--it's smart!!! The World Health Organization recommends two years of breast feeding (at least). And my ped. told me that American Academy of Pediatrics is discussing a change in their recommendations...I think he said it's currently one year and they're talking about recommending two. Yep...it's that good! And no, you do not have to have had the cold yourself to make immunities for it according to the breast-feeding class I took. She said that literally you can be in a room with a sick person, they sneeze, and your breast milk begins to change to give your baby exactly what they need to fight off that cold that they were just moments ago exposed to. Wild and wonderful!!!
At 8 weeks after delivery, I was making a ton too. I simply pumped only when it got uncomfortable and personally didn't experience any rebound. Within a few more weeks my breasts adjusted and I no longer had an over-abundance. Wish I had pumped a bit more to stash it in the freezer. Months down the road I was frustrated to pump and only get 4 oz. between the two! Go figure.
Good luck and wonderful idea, Amy!