I did dream feeds for a few months with DS1 and for a 12 months with DS2. With DS1 it got him through the night. With DS2 it meant he woke for one feed instead of two (usually). I swear by them, but I don't think it works for everyone.

I would just get them up and feed before I went to bed. They very rarely woke up - maybe once or twice ever and even then they went straight back to sleep.