Morphology and TTC

Anyone’s husband struggle with poor sperm morphology? On the WHO scale my husband was a 15% which is passing since the WHO scale is less strict and wants to see men at 4% or above. Then he did a second SA this time on the Krueger’s strict scale. He got a 3% where Krueger wants to see men at 4% or above. I just know it measures function more so than the WHO scale that just looks at shape. We put him on a TON of supplements and retested him 3 months later. He got a 6% (so it doubled) on the Krueger scale. We were happy, but uh ... still not pregnant and I have checked out just fine. Just not sure what else to do or if we will ever have a baby. Anyone else have a similar experience with morphology?