i was in the same shoes as you, neighbourhood to a good jc. struggled very badly in j1 and always ended up the bottom few of the class despite the effort and stress i was in. whether it gets better i’d say it depends on what do you want. if it’s in terms of mental health and stress then i’d say likely no. but if it’s graduating with good results then i’d say yes because being in such a school pushes you with them and even if you’re struggling there (average or slightly below) you’ll tend to end up graduating with a good rp anyways. but the rigour the jc put me through did make me blend and cope well in uni so it really depends on what you want to prioritise!