Why getting into the habit of not using the ailerons?
If a new pilot is over banking the plane, there is mostly too much throw, take the rates down.
I remember a long time ago when people told me that everyone should start with a free flight glider, then 2 channel glider, then put a motor on this - and after that you might try a 3 channel plane....after a few seasons you might be able to fly solo...
If you want to learn fast and efficient, use all 4 channels on your trainer.
Most important things is getting a good instructor - one who can also teach rudder skills.
And get a simulator - it always pays off and get you started.
I learned like this and soloed after a short instruction session.
And a good pilot never stops learning...