The difference with no.3...

First kid - I washed his bum in warm water and dried with his own towel at each diaper change.
Third kid - a wet wipe will suffice and cold water is okay.

First kid - I used Bepanthen.
Third kid - Vaseline is much cheaper.

First kid - I jump each time he even whimpers a little... Is he hungry? Dirty? Colic?
Third kid - a little crying is good for your lungs.

First kid - I check the time at each feed, each nap and count how many times he poops each day.
Third kid - I don't even look at the clock.

First kid - I sterilized his bottles.
Third kid - I don't have a sterilizer. Rinsing with hot water will do.

On the plus side...

With Joseph, I worried he would get used to my rocking him to sleep and his sleeping on my chest would tie me down. My worries caused much unnecessary stress on myself. I rocked him till one day when he was 13 months old - he just pushed me away, crawled into his crib and fell asleep. I felt so redundant! Now, in the blink of an eye, he's coming to 7 years old, over 24 kg and impossible for me to carry.

I've learnt my lesson. With Isabel, I'm more relaxed. She can nurse as long as she wants. The last few days, she has been napping for about 3 hours each afternoon on my chest. She sleeps so much more soundly and I get some sleep too. I know for sure this will not be forever and I will miss it all too soon.