Y axis on my prusa mini+ is quite noisy, not sure what to check for

Hey all, recently purchased a second hand mini + from someone that didn't know how to set it up correctly. I've re calibrated and fixed things so it's now actually working, however it is quite noisy compared to my ender 3 I had an skr with silent steppers installed.

I can't tell from the prusa instructions how to possibly adjust the belt tension (if that's it) or if that's normal behaviour. Any help or direction would be greatly appreciated!