Re: How did YOU do cow's milk transition and pump-weaning?
You will want to wean from the pump slowly. I dropped a session per week. With Lilah, we just switched straight from frozen milk to cow's milk. With Trixie, we phased out the frozen milk and phased in the cow's milk. We got rid of bottles at the same time, so at first she got three bottles a day, then two bottles a day, then one and then none. I have never put anything by my own milk in a bottle. With Lilah, we let the babysitter just give her however much cow's milk to drink that she wanted, but limited her to 16 ounces per day. With Trixie, she was drinking about 8 to 12 ounces of my milk at that age and I told the babysitter to limit her to 12 ounces. Looking back on it, I think that Lilah drank too much cow's milk. Another thing I did/do differently with Trixie is that she only gets cow's milk in a regular open top cup. We used to give Lilah milk in straw cups and I think that contributed to her drinking too much cow's milk and not eating enough solids.
But I'm rambling! Anyway, wean from the pump slowly so that you don't get mastitis, and what you do with cow's milk is up to you. If she doesn't like it, you can mix it in with breastmilk until you get to a full cow's milk serving. Or you can just give her more yogurt and water. If you are nursing 5 times in a day then you don't need a milk substitute, so it won't really matter if she doesn't like it.
And on the sleep... it's normal. Normal, normal, normal! My 20 month old cosleeps and nurses at night. In our house, we do whatever it takes to get EVERYONE the most amount of sleep. Sometimes my husband sleeps with my almost 4 year old. I cosleep with Trixie after her first waking of the night and until I have to get up in the morning.
Lilah 10/08 nursed 25 months
Beatrix 01/11 nursed 30 months