absolutely batch cook now, including some desserts if you can!
If you're planning to breastfeed, when baby comes have a glass of water and some snacks like dried fruit and nuts in a bowl in every room you're likely to be in. If you're planning to.formula feed and can afford it, grab some prepare bottles of your chosen formula (the small ones) to use rather than faff with making up powder formula in the early days.
When physically able to, I highly recommend getting for a little walk every day, even if its just 5 mins to the end of the road, it does wonders.
You can never have too many muslins!
As pp said, expect to spend the first months "babymoon"ing.
Personally I didn't find it too hellish, though I was very lucky that we had a late June baby and dh is a teacher so I had tonnes of support for the first 3 months. Accept help wherever offered - in the gap between paternity leave and summer hols, I had dm or dmil pop in to help, and not just to hold baby, guests can make tea too.
The other thing i would say is that for many women, the rush of instant love on birth doesn't happen, it's more of a slow burn. I spent the first 2 weeks of ds life worried I didn't love him enough, then suddenly it clocked that I would do absolutely anything for this tiny life. Try not to put too.many expectations on yourself.