What should i do about amending my refund for a 1098-T form

I just filed my 2015 refund the other day and i did not put in my 1098-T form. I went to try and amend it but once i did it told me my refund total was (approx.) $400, when originally it was (approx.) $4000 (before i amended it). Can someone explain what is happening? also will filing the amendment cause a delay on my refund that is already filed.? someone told me that i could wait for my refund to be received then file the amendment. What should i do?