It does sound as if laser treatment is going to be the best option for your DS, OP. One of my kids struggled with very dry eyes with contact lenses for years, but luckily his eyes improved, & he manages ok now with daily disposables when he needs them (eg for sport)
I didn’t have laser treatment, but did have surgical lens replacement, getting on for 20 years ago. My prescription was -10, I also had progressive astigmatism at upwards of -5, & my lenses had deteriorated to the point where everything was yellow.
At that time focusing replacement lenses weren’t an option, & I came out of it with superb distance vision but needed correction for both near & middle distance, so I’ve had (very expensive) varifocals ever since.
Since then my corneas have continued to alter - distance vision has deteriorated, but I can now (barely) function with both near & middle distance without glasses if I have to.
I do wonder whether, with my peculiar eyes, laser surgery would have needed similar correction later as the corneas continued to change, or if the laser treatment prevents further changes 