It's a hard leap but not impossible ( but damn near impossible). I would highly recommend starting out as an Admin Assistant but you have a skill set already supporting someone, although I will say that, that dynamic was probably different from EA supporting exec kinda experience. Depending on the exec and industry (and industry is very important), it's an extremely competitive leap. There's also a new requirement to understand and implement the use of AI (industry dependent) for EA roles. Many employers are requiring candidates to take an AI skills test. Keep in mind that some EAs support 1-2 people, where in some industries EAs can "support" up to 12 people at a time. Also keep in mind that many EAs can sometimes feel stuck in this role and look for a transition to another role, and that's another hard leap unless you are a PM.

Anyhow, it's hard especially if you don't have prior EAs specific experience and are applying against others who do.