I’d say this is good advice for writers in general. I myself need to really work on this. :-/
This word count is not impossible. It’s about two pages of standard paper a day. At first, do not surpass this word count. This is an endurance race, not a sprint. The recommended dosage of 1,000 words a day is doable by the average writer, is a concrete number for you to strive toward, and is about as much as your audience can read in a day. Do not do less, either. This is a regimen. You need to get used to producing this much content quickly and without complaint.