😕👎 Horrible advice.
Please do not follow this advice. This might show why Jefgreen is so bad at interpersonal relationships lol.
Anyway, my advice would be to just let him know how stressed you are about the whole deal and ask if he could help you maybe study, instead of just blankly saying "do well!" I know the pressure of following in the footsteps of a sibling. My brother went to an Ivy League school so I always feel pressured to do as well as he does. However, everytime I talk to him he gives me nothing but helpful advice on doing what I want to do and follow what I want to do. I get so much use out the tips he gives me, I would suggest maybe talking to your sister. Ask her how she deals with your parents and how she managed to do so well. In the end, we are all different people and do things very differently. Find your style and you will be golden. I guess I am lucky to have very helpful parents. You have to remember that times have changed since your parents grew up (mine didn't even grow up in the US) so they might not understand how you already have enough stress placed on your test scores and other things. The main thing, as others have mentioned, is to communicate with them. There were a few times when my parents would ask me if I did homework and it would get annoying and I would lash back some times, but in the end, they are just trying to be helpful and deserve your respect for them to care so much about your success. I have gotten to the point where I am usually more tough on myself than anyone else could be so my parents are content with anything I do, because they know I have done it to the best of my ability, and learned from my mistakes.
Most importantly, therefore, (1)talk to your sister and ask for her advice. (2)Talk to your father and tell him how stressful the ACT is for you and that you are trying your best. (3) Try your hardest, and you will achieve whatever you want. (4) Don't listen to Jefgreen's advice, ignoring people leads to many more problems, and generally shows a sense of immaturity. People like to be respected on equal footing, and your parents will realize this if you talk in a respectful manner.
Sorry for the long post.