Well, ill suggest for a year or two gap. Why? To ensure financial stability, your inner self heal well and you are able to handle both kids well. Having said that, if you are c section, it is also ensure your scar/operation heal very well and don't open back. Indeed it can be tiring handling kids under certain age esp in toddler/infant stage period. Not easy as we can get tired easiley with chores, kids, cooking, etc. Our time management has to also well balance.