Hi Ramanan,
I would suggest using a hyperlink to open the forms up, this way you will not need to copy the items anymore since you are already opening the actual form itself. Then, what you would need to do is add a copy button to the published form (you may need to add a hide show logic to this button - hide if the form is new form and show if the form has already been submitted). What this button should allow you to do is re-name the form's name so that you can submit the form as a different item. Is this approach possible for you?
Regards,