how to manually display mobile menu at a certain width instead of regular menu

Hi! maybe it's a stupid question but I didn't find a way to do it through configuration. I would like to simply display the mobile menu at a width I consider (for example I think that right now it is displayed automatically at around 750px, I would like it to display at 1000px to avoid the menu to display in different lines). I have css responsive classes and I tried to figure out what class to display and what to hide with no further solution. Maybe I missed a line or maybe the answer is a little bit more complex. Any ideas? thanks!