I reported capital losses over 20K in 2016, so - after deducting 3K - in 2016, there was capital loss carryover that I should have reported in 2017. 

However, I forgot to report the capital loss carryover when i filed my tax return in 2017.  

I now want to carryover the 2016 losses into 2018.  I have prepared an amendment to my 2017 taxes to properly include the carryover losses on a schedule D.  Because of my low income in 2017, I won't be due any additional refund or owe payments. 

My question is:  When i file my 2018 returns, do I have to wait until my 2017 amendment is accepted by the IRS?  OR can I just file the 2017 amendment and file my 2018 return shortly thereafter  (and file my 2018 return based on my corrected 2017 return). 

Thanks!