Scheduling a visit to a convent is the best way to get a clear idea of the life. Going by yourself can seem a bit overwhelming, but there are many opportunities for "nun runs," "vocation visits," and "come and see" retreats. All of these things involve no commitment but the time you take for it. And you learn a tremendous amount about the community by visiting.
If you seriously believe that God is calling you to live religious life, visiting one or more communities is an essential step. All communities require visits, and sometimes live-in experiences, before accepting candidates. But go. Don't let the fear of making a step keep you from it - you will be able to learn so much about religious life by seeing it up close.