HELP with the timing of Samurai Edge

I can’t get the timing right with hitting someone with Samurai Edge after dashing up to them. It seems like my timing is just off because I’m hitting them with it right as their beginning to get up. Do you guys have any tips on how to get this timing down right? A lot of Wesker’s BnB’s rely on this so any tips/help you guys could give will be greatly appreciated. Thanks.

Wesker Question Thread