This is completely Random. You might get it in the first hour or
maybe after a long time.
To get eggs faster, it depends on the:-
- Successful breeding rates are higher when you place two Pokémon
in the daycare of the same species/egg group.
- OTs (The first pokemon's OT should be different from the second
pokemon's OT)
- Pair Compatibility to each other. It can be found at the bottom.
(Pokémon will attempt to breed depending on how much they like each
other.)