What's the best way to check on the status of special order items? (Told would take 6 weeks, but may be sooner)

You can stop by your local Lowes store and talk with the person at the on line desk where you pick your order up. They can search status of your order. They may also be able to provide you with a tracking number for the order you made. The estimated delivery time is pretty accurate, you might receive it a little sooner, which is a plus!

Call customer service or the pro desk

Call customer service.