You're doing fine. 27% is great for fertility, so hold steady on that!
For girl frequency you'd ideally have had DH release daily 7-10 times before your first attempt, and then BD daily through your fertile window. Now if it's too late for that, you might want to have DH release once, then BD as soon as he can after. However, it depends on how fast you want to get preggo, I think you said this is your last month for awhile? So you might want to drop the frequency thing entirely and just BD through your egg so you maximize chances of pregnancy. Frequency doesn't sway that much anyways and girl frequency obviously reduces the chances of conception by quite a bit.

