Hi, Becky, and welcome! It is a bit quiet here at the payroll forum, but we usually do great with following if somebody starts!
I have been doing FlyLady on and off since 2005, and right now I am considering switching to the card system, because I think it could be more flexible. But nevertheless, the system never works if you don't work it!
I think that with a full time job, a 3yo and a baby on the way you will have to downscale on the cleaning - and also delegate. Is there a husband/partner who could share the chores?
6-12 hours of "moderate cleaning" seems really a lot to me. Does that include cooking, laundry and dailies? Even so, it still is a lot to fit in!
FlyLady swears by the routines (which take 15-30 minutes), and the weekly home blessing hour. Now that's not enough for me, but (on good days), I have three daily routines:
* get dressed, hygiene (15 min)
* feed critters (2min)
* spiff up upstairs bathroom (4 min)
* breakfast (15 min)
afterwork routine - alltogether 15 min without dinner
* feed critters, scoop litterbox (5 min)
* start laundry
* PU&PA (pick up and put away) in bedroom
* PU&PA office and hallway
* spiff up downstairs bathroom
* make dinner and eat it
evening routine - usually 20 min
* clean kitchen
* PU&PA living room
* hang laundry
If done daily, these routines can keep the entire household fed, in clean clothes, and the house company ready at all times. Yes, on some days I don't clean all the messes - but I get to them the next day! And sometimes I even manage a quick vacuuming session within the afterwork/evening routine.
So, my advice to you is - figure out, what is really necessary (usually that is the 3Ds - dinner, duds, and dishes), do that, and set a time limit (15 minutes or so) every day or twice a day and get other things done. What gets done, is done, what not, you'll get around to it tomorrow or next week.
Don't try to do it all. Perfect is only for magazine pictures, not real life!
All the best,