Rebekah at CSPP has some great advice for parents, pastors, ushers, and others for making it easier for parents to bring their younger children to church.
I particularly like the giving temporary shut-in status to new mothers. With the exception of the child's baptism, the Orthodox still do that for their mothers, and many other religions have regulations that free them from having to perform daily rituals during the first several weeks after having a baby. In the United States, our mothers think they should be back on their feet and in full gear when they get home from the hospital. As a lactation consultant, a mother, and someone with a degree in psychology and child development -- this is very harmful to their well-being. They should be getting to know their baby, learning to breastfeed (because it is a learning process for both mother AND child, even if it isn't the first) and adjusting to life with a new little one.