I largely agree with the other answers in multiple ways.
First of all, you should not be thinking about “The Ivy League”. The Ivy League is a sports league. It consists of eight very good and relatively old schools that happen to compete in various sports. There are hundreds of other very good universities that will prepare you very well for medical school or for a good career in multiple other areas. Admissions to one of the Ivy League schools is a reach for nearly every applicant, and is not necessary. It is also way too soon to know whether one of the eight Ivy League schools will be a good fit for you. Also, the eight Ivy League schools are not all the same. It is very unlikely that all eight of them would be a good fit for any one student.
If you look at the students at very good medical schools, you will find that they got their bachelor’s degrees at a very wide range of universities.
Putting that aside, we can also think about what courses you will want to take in high school to help you get accepted to good universities and then to do well in university. You will need at least three and preferably four years of a language other than English. You will want to take actual language classes at your school, not just study on your own. For a foreign language, not only do you want to be hearing and speaking it in class, you would be best off if you can also find opportunities to use it outside of school. You will want at least one class each in biology, chemistry, and physics. You want a regular progression in mathematics, preferably at a mimimum leading up to at least taking precalculus and algebra and trigonometry in high school (calculus in high school might be desirable and possibly needed for top schools, but being very ready to take calculus when you get to university might be thought of as a minimal level of preparation). You should at a minimum be ready to take calculus in university. Doing very well in all of the prerequisites is going to help a great deal when you finally get to calculus.
If your schedule is too packed to find time to study Spanish or some other language in high school, then your schedule needs to be changed. You need to postpone some of your classes until university, and find time to take a foreign language and math classes (and history and English) while you are in high school.
Someone I know well works in health care. She tells me that knowing Spanish well enough to treat Spanish speaking patients has been a huge help in every job she has ever had. She is also generally looking to hire employees who speak a variety of languages, because they have patients who do not speak English, and need to provide care in any one of a wide variety of languages.
Both of my daughters had majors in university that overlapped a great deal with premed classes. Both have friends who were premed. One friend recent graduated medical school (and is right now a resident in a hospital), another is in medical school, and one daughter (assuming all continues to go well) will be “Dr TwoGirls” in about 16 months but her patients will be large and furry and walk on four legs (she is getting a DVM). In most cases (I have heard of one exception) the students who postponed some of the tougher premed classes to at least sophomore year of university and in many cases junior or senior year of university were better off. Human anatomy is a tough class. Organic chemistry is another. There are many more.
For now, take things at their own pace. There will be plenty of time to get to human anatomy, even if you do not get to it while you are still in high school.