I'm not aware of any good ICs vs. Zelda videos. You can find a few, but I don't know if you can find any in which the ICs actually play the match-up well. My general approach to the match-up is to spend most of the time retreating or constructing a projectile wall that's hard for her to get around, with intermittent approaches mixed in here and there.
I think Grim's suggestion of shielding a lot probably has some merit since Zelda doesn't exactly have great shield pressure and since her grab is terrible, but it's really hard to punish Zelda OoS, especially if you're light-shielding, which you probably want to be doing a lot since you don't want Zelda to poke you. The upside is the less time you spend challenging Zelda, the easier it should be to catch her off-guard.