A lot of people are scared to move from ph1 to ph2. If you find something triggers cravings, then either that food isn't a good choice or else you need to change when you are eating it.
For example, some people are fine with grains, but not if they eat them first thing in the morning. So someone like that could eat a slice of ww sourdough with their dinner, but not a bowl of oatmeal at breakfast.
Remember Dr. A's tips on slowing down the absorption of sugars, too - such as avoiding processed carbs like juice or white breads, eat carbs either that are acidic (like grapefruit or sourdough) or eat them with acidic foods (like vinegar). There are other tips, too - these were just examples.
And finally, just take it slow and easy. Start with one carb the first week - say, steel-cut oatmeal at breakfast (for example). So for the first week, eat like ph1 except for the bowl of oatmeal every morning. Eat it at about the same time of day, and make sure you aren't eating it by itself. If it triggers cravings, back off for a few days and try again at a different time (say, an afternoon snack). If you still get cravings, then it probably isn't a good choice for you. Avoid it, and try another new carb the next week. There's no great rush, but there are nutrients in grains and fruits that you need - so don't stick around on ph1 for too long. I don't have my book right here, but I think (if I recall rightly) that Dr. A didn't like people continuing ph1 for more than 3 weeks and really preferred 2 weeks in most cases.
There are some good sticky threads in the FAQ forum on switching to phase 2, an updated food list, and much more - check them out for some good advice!
Good luck!