I understand your time is limited and I hope the situation with your mother has improved. Have you considered posting something maybe once a week of your own. Just share your thoughts and what is going on, and whatever you want to say? I believe that would benefit you as it gives us something of yours other than comments to up vote. That will boost your reputation, and I am certain you'd earn some things.

It could be even you giving a recap of your steemit week or something like that. As far as marketing. Having this many followers and the fact they are growing fast will have value, I just don't see you being able to gain much personally from it. If you posted maybe one post a week though that might change. You could do more than that too, I was just brainstorming based upon your limited time.