Cut back if it makes you feel better, but you may not need to. I never substantially changed my calorie intake while I was losing, except for those times when injury made me unable to exercise much. I ate pretty much the same sorts of things, in the same amounts, every day. (And kept exercise pretty consistent for long stretches, too.) My weight for a given six week period was generally something like "down 2, down 2, up 1, down 3.5, down 0.5, down 2".
It's almost always just water when you're talking changes that take place on anything shorter than a 2-3 week time scale. Keep in mind that most of us are losing around 1 pound per week, and most of us can experience water-related fluctuations of up to 2-3 pounds in a given day (sometimes even more). If you try to take these small changes too seriously, and minutely modify your calorie intake according to every fluctuation of the scale, you will drive yourself crazy for pretty much no reason.
If you've been losing fine at the high end of your range up to now, odds are you are still losing fine, it's just been masked by a temporary shift in water weight, and you'd actually be risking payback from your body in the form of increased hunger and negative thoughts by trying to cut calories you don't need to cut.
Or, it could be the case that you would be better off a couple hundred calories lower than you are. Regardless, one week is far too soon to be able to tell that reliably.
So do what you feel you need to do for now, but remember about water weight and above all don't drive yourself crazy chasing the scale! I'm a firm believer that we all lose weight best when we invest the least amount of mental energy into it as possible.
Height 5'8 1/2"
GW: Originally 150. Maintaining at about 146 since June 2013.
5K 4/21/11: 31:55
|46 Maintenance Weeks