The phrase "to grow into the role" means developing the skills, experience, and confidence necessary to be successful in a particular position or responsibility over time.
Sentences with «to grow into the role»
Even fewer actors have ever quite grown into that role as he has. (nj.com)
The good news is that most parents work things out as they go along and grow into their role with experience. (education.sa.gov.au)
I'll assume he will be here a long time and grow into this role just as the young players do. (sbnation.com)