I practise those trills and I always miss at least ONE NOTE in those trills. How to do trills perfectly? P.S I hate it when those trills are in pp section.
By best suggestion is to start slowly and gradually get faster. Not the best advice, but this is what i do everyday to get perfect trills (not that my trills r perfect yet lol). And yes i hate them too when it’s in the pp section as well bc it’s hard to play them softly without missing a note.