First big bike lesson tomorrow - slightly shitting it

I’ve ridden my 125 cc (van van) for about 2 years now, and re-took my CBT on friday. Instructor let me have a little go on the 650 cc after the CBT, once we were back at base, and it was fucking great. Put a massive grin on my face.

Got a 2 hour lesson on the bike tomorrow and I am kinda bricking it. The bigger bike felt great, but the additional power kind of made me realise how easily that could amplify my mistakes or sloppy riding.

Any advice for someone making the transition up to 650?