Naturally fix low count + morphology?

Jordan • 21 • Married • Fur Mom • TTC #1 since April 2018

What are some things we can do to help with his count? Scientifically proven please.

ALSO, did you know it takes [on average] 72 days for a sperm to develop? Which means anything he has done in the past 3 months would impact his current sperm now? I found that really good to know!