Slow and steady is good! You probably put it on slowly and taking it off is the same way. Be proud of your progress.
You could try some little things like doing more exercise like a 30-minute walk during the day to burn calories. Or you could look at your food log and see if you can cut about 100 calories from each day. Be careful with that. If I get too low, I am more inclined to binge and blow up all my hard work.
Do you do weights? Some say that adding weights will kick-start the weight loss.