I'm no expert either but from your target and current weight you're trying to lose a bit over 10% of your body weight in 12 weeks which sounds a lot to me ... Especially as you're doing weights which builds up muscle which is denser than fat and will make it seem your loss is slow. I'd suggest using other measures too - full length selfies, tape measure, favourite clothes fitting, that sort of thing. You may find you look well and slim at a weight higher than you think you should be and gaunt at any less. Anyway, best of luck with your goal!