I have a task of migrating a code base from C++ to Rust. I have no experience for both. My previous experience is C. I was wondering how to tackle this task and if I should first learn C++ or Rust?

Thought I might ask this in this sub since my end goal is having a codebase in Rust. I am thinking that doing this migration is like learning two dialects, not knowing in-depth knowledge on both dialects is not going to make it a success. Is this a correct assumption of mine?