My weight just slowed. I reached my goal & thought yay but I kept losing. So I slowly increased my calories as I was able hoping to slow it down. Some of the increased calories came as I was physically able to eat more - eventually more like a regular portion size. I also added snacks. I was still seeing my dietician so I worked through suggestions with her. I added two more serves of carbs (whole/multi grains), another serve of fruit, nuts, hummus, peanut paste, chia pudding, protein bar, etc. My dietician also suggested adding milk powder to my milk to enrich it (for my rolled oats & chia pudding but I found it too sweet).
When I reached goal I was eating about 900 calories. When I finally stopped losing (about 11 months later & a further 11 odd kilos down) I was up to 1300. Now I eat about 1500 to maintain at about a kilo or so heavier weight. And yes I still snack a few times a day.