Sperm meets egg plan advice

Je
So I've read up on this plan aski frost heard about it on glow. But I'm not sure how I should go about doing this. I've included a pic so you can see the plan​as you can see it says to start BD on cycle day 8. And every other day till opk
That's great but last month I got a pos opk on cycle day 11.  
​So That means I'd BD cycle day 8, skip cd9, BD daily cd10 until cd12. That seems like no time for DH to build up his sperm. 
​Thoughts? Hopefully this isn't confusing.