Hi Nikki, I think it's a matter of how confident you feel on a bigger bike. I'm in the same boat as you as i did my CBT a while ago and have been riding round on a Honda CG125. I've just done a days riding round at my local training session on a Kawasaki ER5 where they suggested another 1 day training before Module 1 and then another day before my road test. So adding the day i got on the bike already that#ll be 3 days for me. Personally i was glad to have tried the bigger bike as i think anything less than that would have been a bad idea. For me the bigger bike was completly different than the smaller 125 i'm used to. Best thing is speak to your local centre and see if they will offer a ride assesment and let you know. The one i went to was Bikewize in Cheam, they charged for the days assesment but it also included instruction and they took the cost of the day off my other lessons so i got a day on the bike for free