Re: How much to express/how often?!
I saw your other post. Why do you need to pump? Since you are only nursing twice a day, you could just skip nursing and replace that with whatever else you are feeding her. If the concern is that a caregiver needs to give her something in a bottle, then what about water or whatever other drink (formula??) it is that you have replaced all your nursing sessions with. Your supply is probably fairly low at only 2 nursing sessions per day, so you would probably have to pump at the same time every day between now and when it is you wanted the bottle for. That seems very frustrating to me. I don't believe that you will get engorged by missing one nursing session. If you do become engorged, you could pump at that point. If you're worried about alcohol, dump it. If it's milk you would give your child, then save it for another time.
My daughter is 11 months old right now too and on the weekends we nurse probably 8ish times a day (including overnight). Some sessions are really short. Some are longer. I was pumping at work, but I stopped last week and I didn't get engorged at all yesterday. So that's why I think you could safely skip pumping at this point.
Lilah 10/08 nursed 25 months
Beatrix 01/11 nursed 30 months