Perhaps what I did yesterday while scrubbing in a new rear tire. Pick a flat wide stretch of vacant road. gently weave the bike back and forth in big wide arcs, smoothly using the whole road, gradually increase the lean angle. Do it for a bit, then stop. Repeat every day or two.
Another technique to help stretch your bounds is to enter a turn at your comfortable pace, start and stay wide, then as you accelerate out of the corner look to the inside, either the center line or fog line and head there. (you tend go where you look automatically). This may be a clue to your current discomfort as well, because you are worried about going off the
outside of the corner, you are looking at the OUTSIDE (ditch). This creates no end of problems in smoothness and line. Force your eyes in and ahead.
My wife is a very cautious rider, then slid out on gravel, had her foot pinned under her 750 shadow. This slowed her down even more. She still rides but it's painful to watch (so I don't). I worry she will get rear ended by an impatient can driver.
Caution on the road in ag country is a no brainer. I see manure running out of the spreader, in a day or two it's invisible but you know it's still there. Ditch mowing often spreads grass on the pavement, corn, sand, gravel spill out of trucks. DEER! I still ride and prefer the rural hazards to the city stuff.
Make a point of doing some "pointless" riding. Riding only when you have to "get somewhere" creates a hurried feeling and worry.
