Getting the most out if it

Ok so my SO is suprisingly getting quite involved with asking about ovulation, positions to try and convieve. chances of conception etc which has suprised me :) 
Well I have been reading loads of conception ideas etc and I read that by refreshing sperm every few days is better to concieve ( e.g man releasing his sperm every two days by BD or other means lol ) 
So my SO had totally jumped on this and every other day in a humouros way is reminding me he must refresh his sperm so if we haven't BD is encouraging me / making me assit lol. It's become quite funny to be honest although knowing AF is here he is using it to his full advantage , typical man lol. 
( I have to admit though at times I'm
Only after one thing from him so I guess I'm just as bad lol )