If you have spare time, you can watch TV or chat on WeChat. You may make Chinese friends, whom you can add to WeChat. They will definitely use WeChat. You can talk with them more often, they may be very interested in where you come from, they will be very curious about your world view, you can tell them these things. In this process, you force yourself to use Chinese.
At the beginning, doing this may be very slow. You may look up some words or phrases. But it doesn't matter, you will soon find that you have made great progress, because your brain is actively using this knowledge every day, and your brain will try its best to make it easier for you to communicate, so your brain will selectively absorb a lot of information with high efficiency. Here, I assume that you do not need to learn to write Chinese characters. In fact, in many cases you may not need to write Chinese characters in your whole lifetime.
It is also good to have
one-to-one oral training with Chinese teachers. Arrange a certain time every week, find good teachers, and have one-to-one training with them every day. About 3 to 6 hours of training, seven days a week. After class, you can also prepare a lot of oral Chinese teaching materials in mp3. Repeatedly listen to audio teaching materials in mp3, and once you encounter something you don't understand, go to ask your teacher for help. If you already know all the conversations in mp3, you will not hesitate to let them go and continue the next conversation.
