I have been writing in spurts.
In between looking after my two girls and assorted household/work/family obligations, I have been writing. Mostly in thirty or forty-five minutes sprints, interspersed with baby minding and keeping an eye on an active six years old. I have tried the all-nighter (after managing to get the two girls in bed, whew!), but I have realized that I do not have that energy to do a marathon anymore.
So, it’s spurts/sprints/whatever now, when it comes to writing.
But boy, you can do a lot for spurts. Tight beam focus, trashing out a scene or dialogue – and you have it: a good solid four hundred words or more. Yes, it might be small for some (and this, I salute you – you have time). But for me, it is good enough.