I've nursed through a pregnancy. A lot of women choose to do so. However, there's nothing that can be done about the milk supply. It's completely hormonal. Some women lose milk immediately, some later in pregnancy a few don't at all. I'd keep your eye on your LO's diapers to be sure baby is still getting enough milk. If wet diapers seem too low, you may need to supplement with formula since baby is under 1 year. I highly recommend the book "Adventures in Tandem Nursing" by Hillary Flower. It's got lots of great info. Congratulations on your pregnancy!