Warning - baby on the way

Wow this pregnancy is going fast. I now have six weeks to go. Not long but not to worry, I am attempting to be organised. Tiny newborn outfits have been retrieved, washed, gazed at and put away. I have a draw full of tiddly-sized nappies and cotton wool balls (will I really do that whole cotton wool and warm water thing that I did last time around, or will the wipes win out?) The baby car seat is washed and installed - early I know but I'm not going to be caught out and besides, it was in the loft and I don't want to be scrabbling around with two days to go before my due date looking for lost headrests and straps etc. I am yet to cook lots of meals and freeze them but that is on my to-do list for next week, possibly. Unfortunate accessories to this birthing/babies business - breast pumps, breast pads, other sorts of pads (sorry men if you are reading this and getting red faced, it is not pleasant I agree), bras that unhinge for easy access, tops that do likewise are being found or bought in readiness.The moses basket is in position, with new bedding ordered online, delivered and stored away in readiness. The only thing I need to do now is prepare my son for the coming arrival.
Easier said than done. I have talked about it with him but any attempts at discussion are quickly ignored in favour of the more exciting activity he is engrossed in. We have got out all his baby things and explained how he once bounced in that seat or laid on that rug, and that his little brother or sister will soon be doing the same, but he remained unbothered - although he did enjoy using the moses basket as a boat.
We plan to show him his baby photos and talk about the new arrival in that context, and I am going to do a search on Amazon as I know there are plenty of books out there that can help introduce what it is that is about to hit him.
My guess is he won't be too phased by the event. He never takes any notice when I hold other babies and he is not the jealous type (if a toy is taken from him, he mostly just goes off and gets another) but I do wonder how he will be when my attention, which has been his completely for almost three years, is shared with another. At least we have the summer for the four of us to get used to one another and I will do my absolute best to make sure he never feels left out. And I will remind myself that, in the end, even if he isn't too keen on having a sibling about at first, he or she will be a wonderful playmate and companion for him for the rest of his life.