Mine surprised even Ann by needing less than the recommended amount of sleep and nap dropping early (hat was dt2 and he was 6 months after dd in his nap stopping).
Gradual retreat didn't work for me or elph without adding in the extra work we did with Ann. I got to the point he was falling asleep with me holding his hand but attempts to go further led to 45 minutes trying with a wound up stressed toddler more overtired by the minute.
I also belive we can't control our children and nor should we be trying! I don't mostly aim for control. We only have a few times I must be in control and that's car parks and roads. That's mostly it I think. Realising they are who they are was a breakthrough for me. I could stop worrying about control and focus more on who they are. and trying not to throttle them when they are too damn irritating
For example this winter I have entirely relinquished the coat battle. If they wish to wear a coat they do. If they don't, they don't. DD and dt2 wear their coats on cold windy days or if it's rainy. No weather condition to date has made dt the T don his coat. They all walked up a mountain in the lakes. I wore a vest, thermal top, fleece and down jacket. DD was vest, top, jumper, coat, hat, mittens. DT2 similar. DT the T? why a mere top and jumper of course. Oh- and his mittens.
Today I have put DT2 in bed for a nap ad he was cranky and seemed tired. Good bye, bedtime tonight. Sigh (though they all slept through til the first one at 6 am. If it's in brackets, it doesn't count, right? !)