Prepaid interest is also described as points and should show up on your 1098 under box 6. If they are not listed there you can enter a separate 1098 under the name of the title company and mark that you did not receive a 1098 from them.
Also, ensure that your property tax line on your closing documents is not a credit if it is not reflected on your mortgage 1098. If it is indeed a payment and is not on the mortgage 1098, you can add it to the points form to claim them.
See What are points? for more info on prepaid interest.