In every moment you only have one real choice: to be aware of the Self or to identify with the body and the mind.
Your ultimate need is to get established in the changeless peace of the Self. For this you have to give up all thoughts.
If you can hold on to this knowledge 'I am Self' at all times, no further practice is necessary.
Self-inquiry must be done continuously. It doesn't work if you regard it as a part-time activity.