Started out that way for the first 3 years but it became too much for me to handle once the business really scaled. Now I have 2 people to pick and pack orders (both part time), a freelance bookkeeper and a marketing agency (Although I'm bringing this back in house so will be doing all the marketing myself for a while).
I still do most things myself...
Order inventory, most web dev stuff, upload new products, create blog posts, email marketing, all social media, some customer service etc.
How are you making an income? I assume you're getting a wage from one or both of the companies in addition to profits from shares?