Everyone responds to hypnosis differently, so it's difficult to give precise guidelines. You can try listening to one topic in the morning, another in the evening, and a different two topics on the next day, and then repeat the cycle, for example. If you're feeling you'd like to spend more of your time with any of the individual recordings, it's perfectly fine to adapt the schedule as it suits you.
However, we recommend that you avoid listening to different topics in one sitting. The time between sessions will give your subconscious mind time to process and incorporate the suggestions.