Your parents are figuring it out slower than you’d like. They also waited on you to learn to use a spoon.

Parents are working out how to relate to the adult you have become, without instructions, while still holding a much earlier picture of you. The lag is genuinely frustrating and also ordinary, since adjusting to a person changing takes longer than the change itself did. That kind of patience was once extended in your direction at length.

Try giving them information rather than expecting them to infer it, plainly and more than once. Notice out loud when they do adjust. Some of this arrives slowly, and it does keep arriving.