I don’t usually add any sugar to coffee from a restaurant but at home when I make my own crappy coffee I have several bottles of flavored sugar-free liquid sweeteners nutrition-labeled like this but with a different brand name that are somewhat less expensive (Jordan’s Skinny).
This label says that there are 25 “servings” in one bottle, as mine do also. Wow that would be sweet! I use maybe 1/4 to 3/8 teaspoonful depending on the size of the cup of coffee and even that is quite sweet. I can’t even imagine adding 2 TABLESPOONSFUL like they call one serving - that sounds really gross. So the bottles I have last a REALLY long time. YMMV if you love really sweet coffee.