I agree definitely about routine tweaking. I dont' do it at all. I do stress over gross changes like 2-1 switch, and awful sleep at daycare, but at home, 15 mins here or there, or even 1/2 hr, to my DD makes absolutely no difference, so we just roll with it.
I do not have set nap times, I only go by cues. If nothing else, I am much more relaxed about how our day is going, and this probably rubs off on DD too.
It is hard to choose what you think will work for you. And it may even take some experimentation, but with everything, you will need to try it at least a week I think. And if you listen, you will soon know if it is effective for you or not.