What do you mean waiting to be printed? Does your account say Printed or Ready to Mail? If you efiled and it was Accepted then it's to late to change it.
When did you efile? Was it Accepted? You can check your efile status here
https://turbotax.intuit.com/tax-tools/efile-status-lookup/
When you efile you get back 2 emails. The first email only confirms the transmission. The second email says if the IRS (or state) Accepted or Rejected your efile.