advice please

Stephanie • TTC for 2 years .. my precious rainbow baby arrived 29.01.19💜💜

My partner has low count at 2.7 mil/ml, motility ranging from 27-37% And morphology of 2%. we got pregnant naturally after 16months trying but this recently ended in miscarriage at 9 weeks which is heartbreaking. Is there anyway we can increase our chances of getting pregnant again. we're pretty desperate xxx