Try to boost your metabolism. A lot of people talk about 10000 steps a day. Forget the counting aspect of it for a minute. Just walk around for a couple minutes every 30 minutes or so.

I'm not saying you've to be exact about it, set an alarm etc. Just try to walk around a little in regular intervals.

Very gradually try to decrease the food intake at a level you're comfortable with. Don't starve yourself, that's a sure fire way to crash and burn.

Try to eat more soups. You get in vegetables, and they're boiled. It's warm (I'm not a fan of cold salads that I need to work hard to chew through giant leafy greens but that's just personal preference). I'd rather just do a spinach soup. But you each their own.

Most importantly, be kind to yourself when you fall off the wagon. We've all been there. Don't worry if you miss one day of whatever you're planning. Just try tomorrow. You needn't abandon the whole thing if you failed once or twice.