That's pretty much what I figured.
Gear ratio is 5.4 -1
That bike with a 5.4 - 1 ratio & 212,, is going to be a handful ....
Have you ridden powered bikes much, like dirt bikes or Motorcycles ect. ??
If it was me, I would go with an 11t clutch sprocket to tame it down some out of the hole.
That would give you a ratio of 4.9 - 1
12t sprocket would even tame it down more, & give you a ratio of 4.5 - 1.
If you weigh under ''say'' 180lbs.,, the 12 tooth would probably be fine,, plus safer.