Hi Cody M,
You should share that you are on the autism spectrum early on.
This would be after you would have spent a decent amount of time getting to know her and showing her your personality.
Thereby, when you reach the point in which you feel it is time to let her know about your autism, she would already have had some experiences with you as a person.
Hence, she would have something to fall back on in terms of trying to figure out whether you’re someone she should keep going on with.
So, give it a few dates and interactions before you reveal it. But, make sure you do reveal it fairly early on before deeper feelings start setting in for both parties.
If you are looking for a long-term relationship, it is always best to be honest early on.
If you aren’t, she will ultimately discover what it is that you have been hiding anyway. At that point, she may leave you more so due to the fact that you were not honest with her as opposed to whatever it was that you were hiding.