Hi,
I stopped loosing as well just after christmas, so I went back to dieting basics, kept a food diary of everything I was eating and when, for we can get complacent and extra foods slip in, so it helps us be more focused and work out where were going wrong. I also went back to three meals a day only with the odd bit of fruit as a snack if needed. Then I ensured my evening meal was taken before 630 in the evening.
In my case after two weeks, it became clear that my portion sizes had crept back up with out really realising it. I'm back loosing again on low carb hf diet, still eating 3 meals aday and fruit in between. Give it ago, it worked for me.
Are you fasting ? It is possible to eat too little, then the body goes into starvation mode and hangs on to everything scared and worried when the next meal is coming. Fasting may work for some and some would say it can improve diabetes but its not good for weight loss.
Maybe give the food diary ago and try to work out where your going wrong, but be honest and record everything or it defeats the object.
Good luck
Maggie