You may, and you may not, lose as much as you hope for. No one can predict how much weight you will lose.
If you don't lose as much as you hoped for still be happy that you have done something beneficial for your health.
Then obviously continue with a healthy diet and lifestyle, so you have ongoing health benefits.
The people who do what they can to promote good health, are so much better off than the people who don't care, and have an unhealthy diet and lifestyle.