I may get slaughtered for this one but here goes,
I wouldn't worry about not soloing, if you are indeed "lazy" on the rudders perhaps you may want to get a bit more proactive upon turning final and get your heels up off the floor and feet fully onto the pedals. I sometimes give a little left /right alternate push on rudder on final to get a feel for its authority in the present conditions then leave both feet up on them to sense the alternate pressure which leaves me in a position to be proactive with it.
Caveat: I,m not an instructor, have never flown a skycatcher (but think they are cracking little planes) and I fly a taildragger where the level of rudder work needed sometimes feels like riding a bike.