Low everything help please!

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Hi ladies we have been TTC for 10 months. Doc thinks I am totally fine but we just got my husband semen analysis back and it is not good. Count is 8.2 motility is 43 percent and morphology is 2 percent.
He smokes marijuana daily which he is is now stopping along with cutting back on nicotine and alcohol. I also ordered fertil aid for men, count boost , motility boost and maca for him to take. He is going back for another test in about two weeks. 
I am totally devastated!!! 😭😭😭😭 Is there any chance we can conceive naturally? We are both 26. Should all of this help his counts? How long should we expect until things improve??? Anything would be greatly appreciated!!!