How much control do you give them in the daily routine? This is going to be kind of ramble-y because I have so much floating in my head. Sorry!

I am returning to work (on Monday. Eek!) after spending the first year home with my son. I had a nanny 2 days a week and we hired her full time. But while I was home she was more like a "mommy's helper". In that I still had total control over his routine and diet and basically everything. And she'd help me out and obviously stay with him while I ran errands. Sometimes I would truly be gone all day so I'm comfortable with this arrangement, but because I was at home I could still pick and prepare what he'd eat that day, for example.
I guess I'm just having a bit of anxiety over how all of this is going to work. I don't think it's entirely feasible for me to think I can still have control over every meal and I used to tell her each day what time his nap should be. I want her to have more control but it makes me all crazy to think about it.

What do the moms with a nanny or in home sitter do? Do you lay out a schedule each day for food, naps, play dates, etc? Do you just make are you HAVE food and let them decide what to eat and when? His naps are pretty consistent now but I still adjust based on different factors like wake up time for length of previous nap. That is my biggest fear. Do I just need to let it go since I don't have a choice?

Sorry. Rambling!