3-5 day peeling cycle is a bit general though. When my lips were at worst I did not have a peeling cycle I would just have a massive build up of skin - just like you compare the callus too!!
Healing over time - totaly agree with this, over the years (about 8 of trying to heal) and I mean leaving alone and trying not to cause irritation my lips have got lot's better so I agree with waht you said 100%.
I got this through biting.
In the begining the more I bit the lips the thicker and quicker the skin grew back.
The more I leave alone the skin grows back slower.
It's actually very logical and I hope over time this will completely go away.
( along the way we all get blinded by some stupid 'cure's but I've always thought this is the way .)
That's it for me I'm going to leave the site alone for a while and just get on with life.