Don't do this. Being forced to do revision will only harbour resentment.
In the short term, yes.
I've seen kids who are left to their own devices (I was one).
I've seen my nephews and nieces who are pushed (and doing incredibly well).
I've seen other nephews and nieces left to their own devices (not doing so well, but not doing terribly either).
I see nothing wrong with pushing your kids. Obviously you want them to enjoy their lives. But it's better to make your kids work hard and enjoy their free time, than to let them mope about all the time.
In short, do challenge/ push your kids if you want them to achieve their potential. For 95% of kids, there is no other way. Perhaps 5% are able to motivate themselves without help/ pushing.