Whats the jump gonna look like.

Im sure questions like these are asked here all the time and can be answered by actually just starting uni and experiencing it yourselves, but im a massive overthinker and ive been trying to get the best idea as I possibly can. So in grade 12 I ended bio with a 98, chem with a 96, and calc with a 92 and english with a 93. I pretty much studied for everything by just doing all the homework assigned, and taking practice tests and putting them into gemini and asking it to generate more and more versions I can keep answering and by doing that I was never really surprised by anything on my tests. Now I have heard many students say calc and chem are very similar to highschool, and that bio 1150 is very abstract and weird. So how big of a difficulty jump occurs going from highscool calc and bio and chem to first year general chem and calculus for life science 1 and bio 1150? And does my studying method sound lackluster for them?