Been looking at sharpening stones a bit today, genuinely wonder if I could instead get 2 slate roof tiles and grind them against each other until the surface is flat enough to use to sharpen a knife. Would cost almost nothing.

Or bits of slate for making walls, would have more thickness to it but otherwise more irregular sizing. Could chip it to the right kind of size first and then grind the stones smooth though.

First of all, congratulations on the baby! :) If you don't mind me asking, what sorts of dishes are you struggling to make on stainless steel?

I'm going to be presumptuous here and make a few suggestions, so feel free to push back if you've tried some of these things and they haven't worked or aren't as easy as I'm presenting. If you do still want to transition to stainless, it'll be easiest to start by only doing it bit by bit, rather than all at once. Dishes that naturally contain some acidic element (like tomatoes, citrus juice, vinegars, or wine) will be easiest to cook without a bunch of sticking. I'd recommend starting with a tomato-based pasta sauce. If, as it reduces, you notice bits sticking to the sides, it's easy enough to loosen up just by stirring a bit of the sauce onto it. Once you're more comfortable with this, you can try sauteing vegetables in the pan. Even with preheating, it'll might result in some stuck on bits, but adding a splash of lemon juice or champagne vinegar at the very end and agitating all of the ingredients should both brighten up the overall dish a bit as well as lift most (if not all) of those browned spots you saw. When it comes to searing meats, you might also have to adjust how often you're flipping. If it feels stuck when trying to flip it for the first and second time, waiting a bit longer will eventually lead to the meat releasing from the pan. After the initial release on both sides, it won't be anywhere near as sticky and you can flip as often as you're used to. I wouldn't worry about any browned spots either. While resting the meat, you can toss a bit of wine along with some stock in, turn up the heat, and stir continuously to loosen those bits up as well as flavor your pan sauce. Once it's reduced to about your desired consistency, you can throw a slice or two of cold butter in and stir for a relatively low effort but still tasty pan sauce. Plus, you make washing the pan much easier. I think this tends to be easier than trying to achieve a nonstick effect with stainless, and sort of demonstrates that there's ways to work around the issues some people have that aren't strictly heat management.

My cat really wanted to press the submit button halfway through and force me to edit it to complete the thought as quickly as possible. Sorry if it isn't quite helpful, and I'd be happy to follow up on any of it.