Ironically, there's a great book called "No More Mr. Nice Guy" that you should pick up and read, as well.
Hubbys are considered Heads of their wives in JW land. Use it to your advantage, which means you dont be a dick but you say there needs to be more of a balance. You work long hours and aren't getting enough time with the kids. You are cutting back on hours, and she needs to work to help support the family . There are a few special months a year where you can be an "auxiliary pioneer" for far fewer hours in the month. Its like 25 instead of 50, maybe a current JW can correct me if wrong.
Offer that compromise instead.