Adjust how many calories you eat as you lose weight. The TDEE calculator is great at helping you figure out how much to consume in a day, how much to eat to maintain (which could be a plateau) and common sense, going above will cause weight gain.
Shortening windows helped too Try 19:5 or 20:4 to ramp up. If you’re solid on 16;8 this shouldn’t be hard to do.
But I bet you need a few less calories.
Also while weight may not be changing be sure to measure yourself, you can still lose inches but not weight for awhile.
good luck!