Re: headaches. I very much think the weather is contributing. Warm/cold/warm/cold. March winds and a lot of dirt. Stress as well. I can tell I'm clenching my teeth.
I have not yet tried AT for sleep. Something to consider.
Re: DD hunger. I start with a BIG glass of water (I'm usually parched anyway) and then some tea. If I'm busy, it goes away (it's a lot mental). After I have my early lunch, I'm usually fine. Sometimes feel like I need a small snack around 4, but not always. Again - so much of it is mental. I'm used to eating at set times.