Yes. To what degree is the real question.
It is important to keep in mind that your children regardless of height or age, are still yours. You love them and very much want to see them do well and experience joy in this case, the happiness associated with being accepted into college. At the same time, come September, they will likely be on their own when trying to navigate not only their course load but, the registration process, roommates, meeting with instructors, without mom or dad being there to help them.
I would absolutely encourage you to assist your child with the college search and application process only be sure to limit the questions, limit the conversations, limit the input allowing them to make their final decisions. Having a conversation with a student about college is perfectly fine but some individuals will seek to have "a talk" every night, every other night, at breakfast, when a student returns home after the school day. Setting up specific times, appointments if you will, when both you and your child can come together to talk about college and where they are in the process is an outstanding idea. Setting aside a specific time frame helps students not to be fearful that at every bend, there will be a question, a little more input, etc. Using this type of format does not mean that as a parent you can not/should not be asking questions or trying to move them along in the process but very often when a set time is used, students are a bit more relaxed and come to their "appointment" more ready to share.
When it comes times to finalize a college list, parental input regarding tuition, distance, environment are all areas that you definitely need to have your input considered but when you visit a campus, let your child lead you. Let your child who is really now a young adult, decide if one school stays on their list or is taken off.
We need to remember that when in college, the teen is the one living on campus attending the classes. Although we all know what is best for our own children some times, some times they know better what is right for them.
It is such a fine line to walk as a parent with a child that is a junior or senior in high school. If they become annoyed, step back and think about how often you are trying to speak to them about their future. Often they will become overwhelmed but if you keep your "appointments" to maybe once a week, you may find your child actually coming to your more often not waiting for the set time. Please note here that it is they that will come to you, instead of you going to them, which is generally speaking, when they start to get annoyed.
Let's all remember we were 16 and 17 at one time. Life will balance out. Let's just walk these two years slowly, together.