heyy, i was in that current situation when i was in year 10, thinking about what sciences i should do because i wanna do a level bio, chem and maths, and right now i'm doing separate higher science. doing that (in my opinion) does certainly give an advantage as u slightly learn higher detail for certain topis and its realllllllll fun! but like the other person said, it's up to you since it's ur life but i do recommend triple science