There are two brilliant threads running, one on starting and one on maintenance and im sure you'd be welcome. I don't post on them often but am on the maintenance one now and then. Sorry am on tablet and even writing is a pain, can't link!
It works differently for eferyone. But I find that on my fast days I daren't eat at all until the evening because once I have even something small I'm done for. That also leaves me with more calories for a good evening meal. I fast on busy days when I don't have time to think about it.