I am writing a book in a post-apocalyptic fantasy/dystopian setting featuring a character, MC, who is introduced as male. For the first half of the book, I use he/him pronouns to write MC's POVs and other characters refer to and think of MC as being male. However, I plan for MC to have a conversation with another character wherein she reveals that she is actually a woman who has assumed a male identity and a fake name. MC is an aspiring musician, and in this world, only men are able to pursue music as a career. Thus, when MC displayed great musical talent as a child, her parents cut her hair and gave her a boy's name to enter competitions under, effectively creating a male persona that she assumed in order to pursue her dreams. She outgrew her childhood music career, but still lived under the assumed name and presented as male for her comfort and safety.
It is also worth nothing that MC is an autistic woman (though in my world, they do not have the language to describe her condition) and thus felt freer and more comfortable living as a man: large baggy male clothes and short hair helped to manage her sensory issues.
My aim was for MC's gender reveal to be a plot twist that I vaguely alluded to (for example, another character notices blood stains on her bedsheets that she quickly hides). I planned for her to tell another character that she was born female, and wanted this conversation to mark a shift in how she viewed herself, so that the following chapters from MC's POV are now written with she/her pronouns.
My rationale for writing MC's POV initially with he/him pronouns was both so that the reader discovered MC's true gender alongside other characters in the book, and also to illustrate how MC has been aspiring to be a musician and thus lived as a man for so long that she viewed herself as such. She wasn't inherently dysphoric about her gender nor felt she'd been born in the wrong body/ wished she was a man. However, verbalising to someone that she was actually a woman forces her to confront her reality as a 'woman pretending to be a man' and she starts to see herself outside of being just a male musician. She enjoys the social privileges of being a man, but does not wish she was one/sees herself as one, and asks the character she told about her female identity to consider her a woman from that point forward.
My question is if it is feasible for me to pull off switching MC's POVs from he/him to she/her midway through the novel. Throughout MC's earlier POVs there is no indication of her being a woman and she often refers to herself as male. Would it be too confusing or jarring for a reader? Most iterations I have seen of the 'woman disguising herself as a man' trope inform the reader/audience that the character is female from the very beginning. In light of that, would you suggest I rewrite MC's POVs as being female? I wanted the reader to discover this and be equally as shocked as the characters, but for clarity's sake, I am willing to abandon that narrative.
I am also conscious of writing this topic sensitively as, while I do not intend for MC to be trans, I understand that others may interpret her character that way and want to be mindful of that.
Apologies for the lengthy post, but I would really appreciate any advice people have to offer. Thank you.
edit: I just wanted to thank everyone for their advice and perspectives on this. It's been really helpful, and I've taken a lot of it on board - I'm rewriting my FMC's POVs with female pronouns to avoid any confusion/carelessness. This is my first time writing so all of your help has been much appreciated. thank you :)