Yup. exactly this.
If it is a significant plot point that the MC gets some sort of body change, this also works, but it has to be compulsory or the get the issue with multiple renders. It is not a great idea to have this sort of compulsory change, as some people love body mods, and other people hate them. If it going to be done, then it is best to do it near the start, that way you don't alienate the section of the player base, those that like it or are indifferent will stay, and those that hate it will quit.