Do whatever works for you, but make sure you do it!
I’ve told this story before, but I tried getting up to write before I went off to my full-time job when I worked at a publisher. I’d be falling asleep at my desk at 5:30 in the morning. That routine didn’t work for me. But grabbing a lunch break or two during the week worked as well as occasionally writing late at night.
Know what works and doesn’t work for you. But be consistent.
The more you hold to your routine, the more you’ll see your writing project grow. You don’t have to cram 10,000 words into a writing session. Be slow and steady. But be consistent.
The more you write, the more you’ll want to write. I really mean that. It doesn’t mean you won’t have bad days or times when the words aren’t coming. But it will mean that you’ll miss it when you’re not writing.
Bit by bit. That’s how you write a novel. Little by little.
I’m not sure if I buy the saying “Slow and steady wins the race.” But I do believe that slow and steady can result in a finished novel.
Slow, steady, and (did I say this already?) consistent.