Ask HN: How does GTM for pre-revenue early stage startup look like?

Hey! While designing a pitch deck for an accelerator, one question always pops up in my head about what should we write about GTM being pre-revenue early stage startup? I get the target audience, testing right hypothesis, distribution channels, but I feel YC content doesn't provide the clear answer to this situation. Other content dictates a version of GTM that's way beyond our stage, series A at least.

I'm wondering, does that mean we are too early to apply for an accelerator?

Thanks to all taking a look.