So far I have identified the following strategies (but the info is SO conflicting):
1. BD every day during the fertile period
reported BFP success on BaB - up to nine days in a row with a low count
a few reported cases of reduced sperm count following this strategy on BaB
It appears to have been shown, both with normal sperm counts and low sperm counts, that daily intercourse during the fertile period produces the highest pregnancy rates.
2. BD every other day during the fertile period
reported BFP success according to Fertility Friends charts;
it is said to have been proven that every other day is more effective than every day regardless of sperm count.
3. BD 2 days before O and the day of
one reported BFP success on BaB after 6 months of using this strategy with only 4 mill sperm count
4. to abstain for 5 days then BD 5 days in a row
Seems like abstaining for more than 2 days in not good "In men with low sperm counts, the researchers found the volume of semen increased after prolonged abstinence, but the quality got gradually worse the longer the men held back." https://www.intelihealth.com/IH/ihtIH/EMIHC276/333/22002/366291.html?d=dmtICNNews