Man maybe it is because you are being honest from older to younger but me always being the younger one to an older girl, if i'm just honest with her about my age, no matter how i say it or with what energy, it is a death sentence. She may not say it immediately, i might even get the number, but later on she will use it to backwards rationalize why she isn't feeling it. It is a huge minus. I urge people on the forum to try out the different methods and see what works. In my view the best to worst way of handling it is:
1. Lying
2. Being honest
3. Giving a "non-answer", pushing it off, reframing it, cocky funny, etc.
I think number 3 is by far the worst one, because she is gonna feel like you are hiding something from her (like you said, being weird about it). "Why won't he just tell me!!". My experience is that as soon as you try and dance around the question, she will completely zero in on the issue and give it 100% of the focus and now you have no way out except telling her an age number whether that be the truth or something else. I like to ask girls however "how old do you think?

" before i lie to them lmao. Or tell the truth. Sometimes i approach a teenager and she think i'm 25 or something and is relieved when i tell her i am 21. So it can work in many ways.
Anyways,
here's a lay report of me dodging the age question the entire date until i'm seconds away from putting my dick inside her and she said "How old are you?". If i had told her i'm 2 years younger than her, she would have bailed i am sure of it. So i just told her i was 24. So i don't believe in dodging the age question as a good strategy, because she WILL insist on it and you will only make it worse by dancing around it.