The provisional to full registration process requires you to

• observe the practice of your mentor / experienced colleague at least once
• have your practice observed by your mentor / experienced colleague at least three times
• engage in at least three professional discussions.

Any of the above requirements can be undertaken with your mentor, or with one or more experienced teaching colleagues, provided they hold full registration. In your context, it may be more appropriate, beneficial or practical to have more than one experienced colleagues supporting you to meet these requirements.