I had this done a few years ago as I was fed up of wearing varifocal glasses.
The procedure itself was absolutely fine. The week between the two procedures was a bit odd because I had normal vision in one eye but impaired vision in the one with normal lens.
As for the halo effect, well it was so pretty I had trouble ‘relaxing’ and not looking at it. For me, it took well over 12 months for the halo to diminish but I rarely drive at night, I have no need to, and I think more exposure to being out at night might have speeded up the process.
After the initial 12 months the halo effect continued to lessen but I can’t remember when it actually stopped.
I’m very happy that I had this done.
Oh I should add that daytime vision within a couple of days of the second procedure was perfect.
Good luck, I’m sure all will be well.