ONLY the non custodial parent needs to attach the 8332 every year ... not sure where you got the wrong information in the past.
TIAA is your retirement and is ONLY noted on the W-2 form ... there is nothing more that needs to be done.
If you qualify you can always use one of the 8 IRS FREE FILE options :
IRS Free File Program - https://apps.irs.gov/app/freeFile/
