Hi.
I would say that it all depends on the age of the children. My daughter is 3 in few days so her sleeping is now not so much of problem like it was a year or more ago, but still... I guess I know how you feel. Anyway, keep trying and you will be rewarded.

I personally feel that reason behind my low LD count is not being awaken by her or not being able to have a nap in afternnons, but my insufficient dream awareness - sometimes I experience strange things in my dreams but none of them trigger my "Oh, it's dream" realization.