Will I keep same lean mass after weight loss?

I’m losing weight and trying to figure out what a realistic final goal weight should be, ideally I want to be 15% body fat

I’m 23 years old, 175 cm tall, currently around 38% body fat, and I weigh 108 kg. I’ve lost 11 kg in the past 12 weeks starting from 119 kg.

I work out 6 times a week:

• 3 cardio sessions (incline walking, 45–60 minutes)

• 3 weightlifting sessions where I use progressive overload and take most sets to failure

My estimated TDEE is 2600 kcal. I eat around 1800 kcal per day and get about 130 g of protein daily. I’m losing roughly 1 kg per week.

Would appreciate any advice