You put your Frame in Emloop, you save before the Daycare man, then you Softreset and Start Emloop at the same time. You talk with the daycare man until the sentence ''Take good care of it'' <-, When you ''click'' that message away, the IV's are determined. Now you'll have to wait until Emloop almost reaches 00.00.00, so you can make a save state. Now you pause your game, load the save state (The save state will be paused now too), then you press CTRL + Z + P at the same time as this allows you to unpause your game and click the ''take good care of it'' sentence away without having frame advancements between them. Now you calculate the IV's of the egg you have to find the frame you are at right now. When done correctly you will be 40-100 frames before the frame you want to hit. Now you pause your game again, load the same state again and make the amount of frame advancements needed.
Just contact me when you're at the daycare center and I can help you :)