The academy uses the word practicum to describe the supervised application of a student's research and study of theory. Michigan State University describes the practicum for a PhD in kinesiology thusly:
The purpose of the research practicum in the Department of Kinesiology is to provide students with an
opportunity to learn and practice research skills early in the doctoral program of study. This research
practicum also provides the student’s guidance committee with an opportunity to assess the student’s
research knowledge and skills, with a goal of using the results to guide research mentoring efforts during the remainder of the degree program.
The requirement is that the "research practicum must be completed within the first two years or 36 credits of doctoral study, whichever occurs later." Thus you may use complete to describe your fulfillment of this PhD practicum before you complete the degree.
It would be wise to consult your own institution to find out whether they use this terminology.