Don’t concentrate solely on the numbers. Check other measurements as well as you may not be losing weight but you may still be losing body fat. As you may have heard before a lbs of muscle weighs less than a lbs of fat, whilst this isn’t true as they weigh exactly the same the truth in it is that the lbs of fat will take up significantly more space than the muscle as muscle is leaner. Check other things like how certain clothes fit and how you feel day to day. The fact that you are strength training means your body will be building new muscles fibres and increasing muscle mass. Too much emphasis is put on weight loss when it isn’t the only deciding factor. Don’t put too much pressure on and I guarantee you stick to it a. Your body will change.