What you're experiencing is normal. I haven't made four figures since November. If you remember, in early December, Medium told me that they would suspend me if I didn't toe the line.
Since then, it's been between 500 and 700 per month, less 10% withholding tax.
This month, my article for Chomsky ($580) pushed me to $1380. I can give you a 100% guarantee that next month, unless I come up with a lucky story, my earnings will be down to between $500 and $700. Not a living wage when you consider that my sole income is from my writing. (This is why I have patrons and supporters).
There is a balance to be found between technical detail and no detail at all. You will slowly build up a readership if you provide your readers with data that they cannot read on other people's blogs. So carry on as you are.