If you truly are eating the smallest amount you can without starving yourself (which you don't want to do), then, of course, the other avenue is to tweak your exercise routine. There are four areas where you can "shake things up" in that regard, and "shock" your body past this plateau that is actually quite common in athletes, and not just dieters.
Frequency, Intensity, Type, and Time (duration).
From what it sounds like, perhaps changing the Type is the solution, from your "exercising to the max" statement.
But try the others too. Add 10-20 minutes here and there. Raise the intensity a notch, add another couple of sets, etc. Tweaking any of those a bit may be all that you need to get those extra 100 calories out, and your eventual last pound or so.
Some suggestions to try with diet too, if you haven't already...
Just for the time being, shave or replace all the fat calories everywhere you can, and replace it with carb if needed, as fat is 9 cal/g, carb is 5 cal/g. Use zero dressing, cooking oils, etc.
Use smaller cups and plates.
Start measuring everything exact again, as it is easy to get away from that. Same with adding exact calories.
Remember, calories can be heavy in drinks.
You can go back to your normal eating/exercise routine once those last few pounds are shaved off. You are just in overdrive now. That last "two-minute drive", where things are intensified.