babies nurse in the oddest positions. DS was a yoga nurser. DD liked to nurse in ballet positions.
I have a 4 month old and I do day care for a 15 month old. During lunch time especially when the 15mo needs a little help, I will feed my LO while he is sitting on my leg. He is supported in front by my breast, and I use my hand just at the nape of his neck to support behind him.