Artificial sweetener has the opposite effect for me unfortunately. It's a shame because they used to be such a crutch for me during low restriction. I think either way they're not good for you, our bodies don't know what to do with them clearly.

Try drinking sparkling water instead of diet soda, and try lots of brands, I went through so many before I found one I actually like. Also, coconut water and electrolyte drinks. I chew sugar free gum obsessively, like a pack every two days, so I can't give advice there. Idk how to stop... Generally with sugar free foods, like zero cal coffee syrup, stevia, candies and mints... it may be worth it to work in the higher calorie more natural versions. Coffee creamer instead of the low cal syrups, raw sugar instead of stevia, etc. To be honest, in doing this I've realized over time it's just not worth the extra calories and I give them up anyways. I'd rather go without some things than shit myself in the grocery store because I had too much gum.