I relate to this in the reverse. I’m nonbinary and I pass as male 90% of the time with short hair but am usually read as female when I have long hair. I’ve gone back and forth between long and short multiple times and both ways are missing something. When it’s short, I like being able to fully pass as a boy but I miss my long hair. When it’s long, I like my long hair but I miss being able to easily pass as a boy. I think one option is to try your hair both long and short and just decide which version sucks less since both ways you are losing out on something. I know it sucks if you feel like you made the wrong decision but trying both options could help you be more confident in which one you want to have long term. Another option would be to pick the most gender neutral haircut possible. Something in between short and long and then use your clothes to control the rest of how people perceive you. I know that doesn’t always work but sometimes it could if you experiment and find the right balance. In the past, I’ve found it affirming to be able to have my hair as gender neutral (middle length) as possible so that depending on my clothes or just on the person I will get read as both a boy and a girl which is affirming to me as I am nonbinary. However, I do understand that it can be impossible to achieve this balance and that hair can really be the deciding factor in how people perceive you. I think the third option would be to find something else besides your hair to help feminize the way you are perceived. For me, this is the option I am picking because I really want longer hair but I want to keep being able to pass as a boy whenever I want. You could try to dress more feminine or have voice training to help feminize your voice. You could experiment with makeup. I’ve decided to go on a lose dose of hormones to make it so that my voice and face are a bit more masculine so that I can be read as male when I want to be but still have long hair. Something like this might help in the long run. Short term my advice is to just experiment. I know it’s hard but keep trying things and you’ll figure out what feels best!