Your size doesn't really effect the number of fingers you use for the brake, for the clutch some bikes may have a heavier clutch and need more fingers, but generally the front brake, just 2 would be more than enough get the bike to stop hard, you can try 2 finger squeezing hard on the front (while you practice) and you should be able to see just how hard you can stop with just 2 fingers.I definitely feel where you are coming from, I guess I was just being extra cautious on the few rides I took it out on when only using rear brakes, I would just let off well before the stop signs and what not. Also it’s a pretty light weight bike, pretty much a street legal dirt bike so maybe that helped my case idk.
I have been practicing now a little bit yesterday and today and feel a lot more comfortable using the front brakes, I definitely still need to do more practice in an open lot though.
I typically use 3 fingers on the clutch and front brakes I’ve noticed. It feels comfortable enough, I’ma smaller guy so I think it'd feel awkward with only 2.
But I definitely appreciate the advice!
Having a light bike, and light rider (since you mention you are small) means you need less force to get that bike to stop using the front brake.
With more practice you'll sure to get the hang of it.
Ride safe safe ride!