As long as you can ensure proper intake of protein, balance other nutrients and reasonable advanced strength training, you will start to change in the first three months, and the effect will be more obvious in six to nine months. If you stick to 1 to 2 years, you will find that the change is very big!

This is a process of gradual change. Even fat people can't be cultivated in a year or two. Normal muscle growth is relatively slow. You can take a photo every month for comparison!

If economic conditions permit, you can ask a better personal trainer to spend the first white period, or you can explore professional fitness materials yourself, or consult the great god in the gym.