I didn't find it hard at all. It was hard going from 0 to 1! But not hard having more kids. My first 3 were quite close - they are all 20 months apart in age (DS1 was only 3 & 3mths old) and it wasn't a problem because I was still in my groove of dealing with babies and settling and all that stuff. DD2 just slotted in perfectly. It was a little harder going from 3 to 4 at first because the gap was bigger and DD2 was 3 &3mths old when DS2 was born so well and truly not a baby so it was a bit of a shock for the first few weeks to get used to having a baby again.