Views will always decline by episode because some people always drop off, while almost nobody starts reading episode eight.
And remember a lot of the people who get 1K views either have amazing art that lands them a promo or have a following from a previous presence. You see the big people because they're big, but just struggling along is much more common. Most of them were probably unnknown once two.
Making it isn't about instant success, it's luck, networking, and just keeping plugging when it gets hard.