Missy.....Sharing "our own" hubs on HP is allowed on an occasional basis. I was told this by a former HP TEAM member, "Simone Smith," so I'm quite sure this is accurate information.
If traffic has slowed on particular hubs of yours, you may want to edit with minor tweaking, adding a video or some such addition to the hub.
You can certainly share your hubs on twitter and pinterest, google+ and facebook in order to allow it more exposure.
Don't panic over this issue. Hub traffic fluctuates all the time. Just do the best you can and keep writing new hubs, replying to the Q&A and interacting on our site.
It looks to me like you're doing well here and in time will gain more followers. Be active, Missy. Make sure to read all you can in the Learning Center. Also, there are numerous hubs written by seasoned fellow-writers regarding "increasing traffic" where you can find excellent advice.