I was going to waste my time doing some of the exercieses people had suggested with actual results which may help the problem, not put it off!
Sure. You deserve bad advice. "work your core" - yeah, that works best when you are ready to ride your "proper road bike."
Luckily, you have pretty time to get things right, and trying new exercises
while having back issues is just what Doctor Dick Cranium thinks you
deserve.