its actually a lot easier if you do a nollie lipslide because you dont come down so hard on it so the slide is a lot more predictable, and your nose is already in the right place to zoot out. even if you suck at nollie, you hardly need to be able to do it for this trick, and i think it will build some of your confidence + strength in taking off the nose for other tricks as well. fakie is a good place to start if this is seeming way too hard still. i skated for like 25 years without doing a single one i think.