R.
I work for a company that doesn't fall under FMLA and did what you did- came up with a plan and had a meeting with them about it. Good job on being proactive.
Depending on what you do for a living (and if you are worried your job might not be waiting for you when you return), you might be able to ask to bring home a computer with you so that you can answer any urgent emails, etc. That is what I did - although you are exhausted as a new mom, you have some free time on your hands while the baby is sleeping and so you can tend to some work related matters. However if you do that, I'd work out some deal about getting 1/2 day vacation back, etc.
Good luck.