As super user at your facility, you are providing value and service that is helpful to your colleagues and ultimately to your patients, and that is commendable. It could also be a starting point to a career in Nursing Informatics. That is actually how I started in my career as a nurse informaticist -as a super user for a couple of EHR implementations.
There are many roles to fill in the Nursing Informatics field, and not all of them may need prior background in IT or computer science, although those could be helpful for certain roles/jobs. Some nurses don't even move departments when they take on an NI role - they can be "embedded" nurse informaticists within their own nursing department, such as Periop. For example, nurses can function as facilitators and coordinators whenever a change in the electronic health record (EHR) needs to be implemented, or they can even initiate the change themselves by identifying a gap and recommending a solution. Other nurse informaticists are in charge of creating and maintaining reports and using data analytics to identify issues/possible problem(s) and their solution(s). Still other nurse informaticists may be responsible for configuring or customizing off-the-shelf EHR software in order to meet the needs of the clinicians, while others coordinate various projects to improve both the electronic documentation tools as well as the data/information extracted from those tools. There's a lot of things that nurses can do, learn, and contribute to in NI! :-)
A typical day would really depend on what role you're filling. For example, an "application analyst" (usually someone who configures/customizes the off-the-shelf EHR software) may spend a large part of their day in front of a computer tweaking and optimizing the software (there is training for this) as well as collaborating with clinician subject matter experts (SMEs) to test and validate their work output. An EHR trainer/educator may be spending their day creating/updating training plans and tip sheets, as well as teaching clinicians how to use the system (in a classroom setting or in smaller groups/one-on-one). Project managers such as myself may spend a lot of time identifying areas of improvement, doing analysis of the root causes of issues, and coordinating the various aspects of a project aimed at improving documentation tools, workflows, or a combination of those. In many of these examples, there may be a LOT of meetings to attend and emails to write! :-D
There are many more roles that nurses can fill in the NI field (and some nurses even create their own roles), but I hope I've given you enough examples to help you get started on your evaluation of where you want to take your career next. You may also want to volunteer for internal informatics-related projects such as electronic chart audits, or participate in your organization's nursing informatics council, if there's one, so you can get a better "feel" for the kind of discussions nurse informaticists participate in and the decisions they need to consider/make. Good luck!