You're down, so you must have established some good habits, right? I haven't been on this board for years, but have been on others, and have been up and down and all over town with my weight in the past five years or so. I think it would be better to establish stability, and good solid habits, rather than the erratic eating behaviors I seem to have.
Your are doing great, and should be proud of your 20lb loss! Statistically, your loss is much more likely to remain off than those who rapidly lose