how long before enhancement??

[susssan]

How long do you think one should wait for an enhancement. I am so disappointed in my lasik and have been stable at worse than 20/40 for at least 6 weeks. It's 3 months since my surgery, my optometrist says it's time, but when I called the center where I had the lasik, they told me I have to wait 6 months.
Is this right? Or are they putting me off?
I hope someone can answer this. I am frustrated at their stance on this, since everything I've read says '3 months'
thank you
susan