Mel - Aston did this too after a bout of sickness and teething, and I just decided that I would sit on the floor and pat his bottom, and said to myself that this is what I am doing right now... and relaxed into it. It didn't last, and he has gone back to being the brilliant self settler that he has been always. every now and then he has a night where here needs me to do it, but not often, and i just do it.
Relax darlin - look it at as a way to slow down for a while. As for when no.2 comes along - worry about it then - because what he is doing now, he will most likely not be doing then - and will have moved onto something else