I've got a great tip that has been working for me for instant air daggers, and has lead me to more variety in my mixups, I've been nailing these with varios amounts of lag online too... I don't have a way to capture video or I would make one to share, but here it is and if you guys find it useful feel free to make a vid to share it:
Throw a ground dagger, then cancel before the second dagger with Back, then Up and Back to jump out of the dagger toss, then d,f. The jump out of the dagger toss isn't the new tech, but the next part is what makes this helpful. For the input of 1 for the Instant Air Dagger, release 1, since you will still have it pressed from your ground dagger cancel. This alone works well but it also serves as a double tap if you throw the ground dagger, jump back to cancel, input the d,f, then release and then tap 1. Using the negative edge on release, then tapping it again makes it a double tap giving you two chances at getting the perfect timing. Works like a charm.