dont'worry too much

I did the same to the I-485 forms of myself,my wife and my child. Of course I attached my visa and I-94. All our forms were approved fast, FP done,cards have been ordered, now we are just waiting for the cards.

Don't worry too much, even though you can write a letter to them. I didn't write to them because they did not ask me, and just when I realized that that probably was a problem,our cases were approved.

good luck