I would make the most of this Christmas OP and not overdo it because children are a game changer for this time of year. Also second PP who said keep some purchases and "grown up" jobs for after baby is here, to keep you sane! You will possibly experience nesting towards the end too, so you will power through quite a few jobs then.
For perspective, my list (with 3 children) in the run up to Christmas is:
1-Remain employed to avoid certain bankruptcy given the little darlings Christmas lists
2-Complete train commute without bashing festively merry co-travellers over the head with my umbrella for making the journey completely unbearable
3-Ask DH to do food shop. Despair when he buys whiskey and minced pies and fuck all else. Mutter "for fucks sake" under my breath at least 10 times before fighting my way through supermarket for actual food we can all, you know, eat.
4-Bollock the cat for trying to violate the Turkey mid roast
5-Vow to wrap all presents beautifully in paper matching the Christmas Tree decs. Abandon plan and chuck presents in gift bags.
6-Declutter/tidy by ramming everything into cupboards
7-Buy batteries. Many batteries. ALL the batteries. (And still not have the right ones on Christmas Day in any case).
I am not even sorry 