Honoring your parents does change with age.
As a child, you honor your parents by being obedient. However, it is made very clear by the Bible and the CCC that even as a child you are only to obey what is right and good. That you are not to obey what is sinful.
Part of growing is becoming a functional adult. When you are no longer living in your parents home you learn many things about yourself. For instance, what is mentally healthy for you to dwell on. Your parents cannot demand from you a conversation on your politics if you know this causes you to sin…or even creates anxiety in you. You have every right to say, “no, I’m not speaking about that.”
Same with many personal things that do not truly affect them. If they constantly ask about a significant other, —or finding a significant other, about your finances, about your apartment life, etc, these are things you may withhold as an adult for your own peace of mind.
You may also withhold information if they are going to maliciously use it against you. For instance, if demand you tell them about your last date and you do so…and then they turn around and demean you for it then you should not share this sort of information in the future.
We do not honor a person by inviting them to sin. Giving people information that they will use to frustrate or mistreat you is like going to the store, buying the best candy bar and fried chicken and handing it to a hungry (Catholic) child on Good Friday. It would be incredibly sinful to do so because you would be leading that person into sin.
In the same way, sometimes “honoring” our parents is by ensuring that they do not sin against us. This may mean as an adult we discern what we can and cannot tell them.