Would You Do Fertility Treatment?

My Husband’s recent SA:

Count: 274 million

Motility: 78%

Morphology: 6% (had been a 3% three months prior - we used lots of vitamins to boost this)

I understand that the 6% is still low, so I’m just wondering if this morphology is really what’s causing us to still not be pregnant (ttc 23 months). No known issues with me either.