Success rates for pregnancy with 67% DFI

Hello I'm 37 and husband 39. We started trying for baby about six months and it didn't happen naturally. So we thought we'll go through medical assistance route. All the checkups for me came in good. Amh- 2.4, both fallopian tubes are open. No pcod. And I'm getting periods regularly(although the flow has reduced a bit). Husband got tested and his motility is low(total:28%, progressive: 18%)  and his morphology is 2%(report attached) Doctor said we can still do IUI since the motility post wash was 90% and we did double IUI last week. We also did the DFI test which result we got today and his DFI Index is 67%. I'm really worried seeing this. I've been reading about this and it says it's difficult to conceive even with IVF or ICSI with this high DFI Index. Also even if conceived, miscarriages are higher due to poor dna quality apparently. I'm really confused whether we should continue trying with these results or better not trying. please advise