Warning: I'm a noobie rider, so I'm not sure how helpful this is, but it helped me over my last few days of riding in the hills.
My comfort zone in twisty turns involves using engine braking, ie letting off the gas and letting the engines inertia slow me down.
Going downhill, engine braking wasnt as effective as going uphill due to the added downhill pull of the bikes weight, so I had to use more hand braking, which isnt advisable in turns. I found myself slowing way down before turns and still not feeling right.
I tried a few things, and finally started using a lower gear. This meant I kept more throttle on to stay the speed limit, and way higher rpms. This got me back in a zone where I could use engine braking again and manage small smooth throttle adjustments.
Once I did that I was able to get back up to the speed limit while still feeling totally calm and in control on straights and in tough turns.