Date Column = ya first weigh in then do + 7 days for the rows be low
Goal weight = target weight for first weigh in ( update it to the actual weight you weigh for the weigh in) and then for the bottom rows sub goal loss amount for each week.
Expected LB lost = difference between prior current row and prior row for Goal weight
Actual weight = where you add your real numbers
Actual lb lost = where subtract the diff of actual weight for the current and prior week.
COmment = I usually put if I'm going on vacation or a work trip to have context on why I may have missed goal.