M.D.
I agree with Karen. Try it and see what works best for you. I pumped milk till my son was 11 months and then started the transition from breastmilk to whole milk (I know it was before he was 1 but it was a good time b/c I was off for winter vacation and wanted to make sure he would take the different milk before he went back to the sitter)
Also at nine months your child is probably eating baby food so they may not want as much milk which is normal. If you have not gone for your 9 month doctors visit you can always ask the doctor how much the baby should be drinking (that is what I always do too b/c I'm a first time mom too)
Good luck and stay with it.