I finally got my Monstera deliciosa to produce a fenestrated leaf after two years, and honestly, I'm not sure what changed

I finally got my Monstera deliciosa to produce a fenestrated leaf after two years, and honestly, I'm not sure what changed. The humidity in my space hasn't shifted dramatically, and I haven't altered the light much. I've read that fenestration is linked to maturity and optimal conditions, but mine seems almost random. Has anyone else noticed their M. deliciosa suddenly start fenestrating without obvious environmental changes? I'm curious whether it's just patience or if I'm missing something deliberate I should be doing.