Hi OP
Sorry to hear re sperm morphology.
My DH had sperm analysis last year and it came back at 1%
One GP said it was no issue as the other parameters were normal, another GP agreed with me for a secondary care referral.
At the fertility clinic the doctor basically said we should refer for self-funded IVF and didn't really comment too much on the morphology but apparently 4% is the minimum normal level.
Anyhow, we conceived about 6 weeks after that appointment and I'm now 15 weeks pregnant.
My DH tried (not very hard) to cut down on alcohol & cigarettes, I kept telling him off each time his laptop was in his lap at home (most evenings).
I bought some tablets for him- Wellman conception I think- several weeks later I found them all in the bathroom cupboard and he'd probably only taken a dozen.
He said they made him feel sick as he always took them on an empty stomach in the morning.
All my tests came back normal, the only thing that changed was I had 2 sessions of acupuncture & took Chinese medical herb teas for about 6 weeks before I conceived,
I'm 39, we have a 3 year old and I had a missed miscarriage summer 2016, it took over 12 months to conceive this pregnancy.
Good luck, get your oh to try the supplements- vit C & Zinc etc