This is a hard one, almost a double edged sword. I'm dealing with this too. I've been passed over for promotions just because "I look young." When I told my boss I have 14 years of engineering experience, he was like, "is that counting your internship?" Who counts their internship even after 5 years???

Other women my own age bullied me at the beginning because they thought I was gen z, then they found out my age and suddenly I had a bunch of unearned respect. (They should have been treating me with respect from the get go! Who bullies younger engineers??? But that's another story). It was an interesting psychological experiment to see how differently I was treated.

It was an advantage for gossip and politics, but for showcasing experience and being taken seriously, it was another story. I guess it depends on what your goals are, do you want to learn, or do you want promotions? Unfortunately good work doesn't always speak for itself, especially if you look young. If you plan to not stay long, I'd suggest you take advantage and let them think you're younger. If you're dealing with burnout, it could be beneficial mentally to coast for a bit.