Did i miss it or still okay?

So I have three boys and I'm hoping to try for a girl. Going by the shettles method he says you need to have sex 4-2 days before the day you ovulate so it gives them slower girl sperms time to get to the egg by the time it drops. I kinda feel like I probably should have had sex last night for the best chance .. what do y'all think? Could I still make it or is it to close for it for be more likely a girl?