No, you do not put $800 on line 54 and $400 on line 55. Both of these lines should be zero on the 2016 and 2017 Forms 5329 if you are requesting waiver of the entire penalty.
It's not clear what amount your 2016 RMD was and what amount your 2017 RMD was, since requests for waivers of the penalty for each of these is made on the Form 5329 for the corresponding year. For example, if the missed RMD for 2016 was $390 and the missed RMD for 2017 was $410, your 2016 Form 5329 will be as shown in the attached figure. The 2017 Form 5329 will be similar with $410 instead of $390 in the two places.
With each of the Forms 5329 (2016 and 2017) requesting waiver of the penalty you'll need to provide an explanation statement.
