Flying anxiety? Please help!

My mom was recently diagnosed with cancer and I’d really like to see her for Mother’s Day, but I have so much anxiety. I’ve been on a plane by myself before but that was when I was like... 10 or younger so I don’t remember anything and didn’t have anxiety back then. I’m scared I won’t know where to go and I have horrible eyesight and can’t read signs, even with my glasses on, so I’m worried I’ll do something wrong and miss my flight or something. Help!!! I wanted to surprise her but I’m scared!