Wow, sounds like you have been busy (and very productive). Nice work on your progress thus far and you can see what you have accomplished in 3 weeks, imagine what you are going to be able to accomplish in 3 months...a year.... or 3 years!

I had the same idea in the beginning about creating multiple websites, but after consulting about in here in the community and reading experiences of successful people , i realised that for the 1st year at WA , one has to just focus on one website for a year and hence i decided to focus on my one niche for the mean time.

I found it really hard and stressful and actually taxing to keep on writing lots of post per day. I make sure i keep posting regularly but i don't keep a goal on a daily basis, as for some topics one has to research more than other topics, and it may take time.

Importantly over time there will be mental fatigue and no creativity in writing. Although this is my experience , it would not necessarily apply to you.