I'm carrying two eggs right now and have two left in the box. Does the number of steps I take count for both eggs or just one? They are my eevee eggs.
Yes, the steps count for both eggs. If you have a Pokemon with Flame Body or Magma Armor, that is also good to have in your party, as it'll halve the amount of steps you need.
Yes the steps count for both eggs. So you can carry a maximum of five in your party.
If you do this I suggest also having a Pokemon that knows Flame Body or Magma Armor.