This is mostly a post from another thread on a similar topic, although that included entertaining a toddler too so if anything looks odd from that perspective, oops, sorry!
Now is a good time to think in the peace and calm - to help build your lists and decide on what you would like!
Things like:
When exactly is Baby due? How close is the latest due date to Christmas (as in, latest Dr would let you go overdue), or how early may you (within the 2 weeks before, 2 weeks after 40 weeks window!) possibly expect to have baby?
Do you WANT to be at home or somewhere else?
Do you have TIME to consider that at the last minute (do your families need it arranged well ahead or can they cope with a last minute addition or removal from plans)?
Do you think you would like to host anyone else other than your immediate family of 4, or would you prefer to be hosted, or just hunker down as the immediate 4 of you?
Is there anyone who might be offended at any of the 3 decisions above, (of the last question) and would they need to be influenced now to get the idea that YOUR plans may not fit in with THEIR expectations?
I would try to put things in the freezer in advance.
Family meals for around that time.
Individual portions of the same meals to allow you to feed only 1 person or to expand a planned dinner as needed.
Things like mince pies or other nibbly things (sweet and savoury things) for visitors - so your DH can easily look after you and any visitors.
Arrange online shopping lists for the weeks around the birth - for having things in for Christmas treats etc, but also just to be organized and not have to face supermarkets in the heaving mass of Christmas shoppers for bin-liners and eggs. Or at least, only going out for 1 or 2 things and not a full trolley load!
Organise other supplies now as you can - gift wrap (when you see it on sale), tape, ribbons (if you use those), wrapping for packages to post, Christmas cards, stamps, etc. Put them in 1 place, and then you can get on with writing cards or wrapping gifts whenever you get time/energy.
Do you want a tree? Do you want a real one or a fake from the attic? Do you want to put it up together, as a family, (even if you are supervising from the couch with a tiny baby) or is that something DH can do with your elder DC while you are in hospital as a "surprise" for you?
Other things that might be good, depending on the age of your older DC, would be a crafty box or a few easy activities and treats for them in the run up to Christmas. So a box of strips of coloured paper and sticky tape to make paper chains (and you can watch while feeding new baby as you'll probably need both hands regardless of method of feeding initially). A nice sticker book or some free printable colouring sheets from the web. A Christmas story to read together snuggled up (with new baby too or while new baby naps), and maybe a favourite or a new, seasonal or favourite character DVD to watch. Or get a nice recipe to make some cookies together while baby naps.
Are there any traditions you have already established with elder DC, especially if they may need to be adapted this year? Can you still do them? What changes do you need to make? Do they involve bookings (and can they be flexible) or just making family time?
Enjoy!!!
1 other thing I only thought of afterwards was that you could always generally write your Christmas cards whenever you have time/energy (great for the "feel like a whale and need to just sit for a while" times) but leave the envelopes unsealed, and you can then add in a quick note on the arrival, and possibly your "thanks for your gift" as well, which saves another card-writing job later.