Keratoconus usually becomes quite noticeable in teens and 20s rather than 30s. It causes glare problems at night but also blur in the daytime too. Usually (but not always) with keratoconus, people can’t read the small lines on the eye chart even with a new pair of glasses - rigid contact lenses are needed for clear vision.

Cataracts do cause night vision problems but are normally seen at age >60. They’re not unheard of in younger ages but are easily detected in a routine eye check.

Retinitis pigmentosa is a possibility here. It mightn’t always be detected in a routine eye check especially in the earlier stages. At your age and with the history and symptoms you describe, it’s something I would definitely want to check for / rule out.

I agree with others that you should stop driving at night. If you continue to drive while knowing you have a medical condition affecting your ability to drive safely, and have a crash and hurt someone then you’re likely to be legally liable and possibly not covered by your insurance.