Take measurements instead of weight. Weigh only once a week or less often only to see the downward trend. Eating healthy food will build muscle and bone so obsessing over a couple of pounds is useless. And there's always water weight to skew the numbers as well.
P.S. As for the diet part, just stay the course. Don't start futzing around with things just yet. Give it time.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Current squat: 157.5 x 2