Found this on pre-seed:)
How to use Pre-Seed to sway blue - Use some Pre-Seed every other day starting after AF is over (it doesn't need to be a lot, because it's expensive...just enough so your body is somewhat used to it when your attempt rolls around) then a bit more every day during your fertile window and then ALSO as a lube during your attempt. You may want to use the Pre-Seed before bedtime to allow it to spread through the VJ without coming back out.