I did, I transferred from biomed to science after dropping out of biomed in 2022. I had a GAMSAT score in the 98th percentile and a 92 WAM at the time, but I gave it all up because I realise that I only wanted med for the money and that I should do what actually makes me happy (teaching).
The new course (BSci) isn't really a new course because I'm really just coming back to finish the chem major after having completed the chem minor in biomed. I'm loving chem because everyone's so friendly and collaborative, which is something you don't take for granted in biomed as you have to constantly watch out for people's intentions.
The transfer process was extremely smooth as they granted me 96 credit points from the units I took while in biomed towards the BSci, which means I get to graduate at the end of this year. However, in terms of the content, the transfer was not that smooth since there's a huge content gap between 2nd year inorganic and 3rd year inorganic, as well as 2nd year physical + analytical and 3rd year physical chem units. Med chem was even easier than the 2nd year chem units I took because it's basically a biomed unit.
The only regret I have is choosing both 3rd year physical and inorganic because they both get a bit difficult at times. If I can go back in time, I'd probably tell myself to stay away from physical, because I didn't get the most out of it. Both units are really well run, but the problem with physical is that some content in the computational section requires linalg to fully understand, and since I didn't take linalg, I don't get as much as I could have out of the unit. Physical's workload is also quite high, since I had to spend more time than medicinal and MTH1020 (calculus) combined on that unit, so I'm unofficially overloading