Removing contacts before LASIK
If you are wearing rigid gas permeable lenses or have a high prescription, it is not uncommon for your surgeon to want you to be out of your contacts for three months.
Out of Contacts before Lasik
It is important to leave your contacts out for a suitable amount of time before Lasik. If these are ordinary contacts (not orthokeratology contatcts) then 3 months seems a little excessive to me, but each doctor makes his or her own decisions regarding this.
Contacts out before LASIK
It's not. It's good that you are considering a surgical solution instead of sleeping in contacts, which is never recommended. Overuse of contacts, both hard and soft, is associated with corneal molding which could distorts corneas and could cause problems with your LASIK. You may also need some time to reverse or stabilize other complications of overuse including vascularization of the cornea. The only question is, is 90 days enough?