Hi,
If you are a Catholic, you are bound to the particular obligations of Canon Law (such as days of fasting, abstinence, participation in Mass). Some people in RCIA are baptized Catholics so they would be bound. You identify yourself as a “future Catholic” so you would not be bound to these requirements. That being said, there are obligations of divine law (“Keep holy the Sabbath”, for example) that bind everyone. I don’t think you are asking about that, though.
If you can fulfill the obligations even while you do not have to, great.
Dan