Old Man Trying Again

Hi I,m Carl and not really that old or at least don't feel it but I do need to loose this stubborn weight. I have had success with low carb in the past but seem to be a bit stuck right now. I,m in pretty strong Ketosis, lost 4 pounds first few days (bye, bye water) now my scale is stuck. All my nutrients seem fine (maybe fat intake is a little low), calories are within range I just cant figure this thing out. Any ideas folks.