Ni.......ni (as we say here) I thought it was níor....ná. I've found two sample phrases - Níor ith sé agus níor ól sé, but I've also seen this - Níor bhog sé ná níor chuir sé a lámha in airde. Does that mean that you put agus in the place of ná ?
The sentence I'm trying to put into Irish is this -
He had neither grown taller nor older in look, .....
Do I have to repeat the verb preceded by níor or not ? Here's my attempt at it -

Níor éirigh sé ní ba mhó ná ní ba shine ar a chosúlacht,.....