Hi M.,
My little girl was on a schedule, starting at 3 weeks and working it through over and over until we had it, adjusting as we needed to. By 10 weeks, she too, was sleeping through the night and so, congratulations to you!
I swear by the book, "On Becoming Babywise" b/c it really made sense and provided a routine we could both live with and yet, be somewhat flexible with too. B/c I am a single Mom who works full time too, having a routine and schedule that let me get rest at night and recharge for the day worked very well for both of us!
Good luck, sounds like you're doing a great job... trust your gut and find something that makes sense to you first!
Good luck, feel free to write me on the side if you have other questions! :)
K.