It sounds like you've totally got a handle on a healthy way to lose weight!
Don't forget exercise! Exercise isn't a magical way to lose weight, but it helps you keep a fit and healthy body and helps with your daily deficit so that you don't have to eat as low as you otherwise would to meet the same deficit.
Also, consider your current weight and whether 1200-1550 is actually right for you. That is the minimum any female should be eating, so if you're overweight, even slightly active, or your body isn't capable of losing 2lb/week, then you need to be closer to 1500 than 1200 daily.
"Less is more" isn't right for weight loss. Lots of people are surprised to find they lose more on 1500 than they do on 1200. :)