That is fantastic news about Troubles hooves!
However, you're going to have to be on guard all year long ----- there absolutely is such a thing as "cold weather laminitis".
What you might do is buy a notebook (yah, I'm old school,lollol) and keep a month-to-month log of his hooves. Depending how fast the hooves grow, which can vary by seasons, it takes 3-4 months to start seeing the new growth.
Keeping a record would tell you when he is most prone to founder. I would also keep track of what the forage is, that he is eating.
For example, Rusty is my healthy horse and while he doesn't founder in the Fall, his personality changes because something in the pasture changes its chemistry and turns him into a 16.H cranky pants for a few months. Nothing else changes, including his hay.
It's possible if Trouble is getting hot hooves in the Fall, something in the pasture is changing its chemistry and affecting him ---- or he is eating tree leaves that are dying.
Every single horse is different, when it comes to the exact causes of laminitis, abscesses, and founder, once Spring grass is out of the picture. By keeping a log, you should be able to pinpoint When Trouble is the most prone to get hot feet.
Also, if you know an equine chiro or massage therapists that also does acupuncture, there are points just above the coronet band called "ting points" that can be treated.
The Cavallo Boots website talks about it. It isn't something the non-taught person should mess around with.
My equine chiro is big into Eastern medicine. She popped Joker once last Fall; the results were miraculous and to-date he has not had another hot hoof episode. https://www.cavallo-inc.com/equine-ting-points/