exactly, there is no to limited population in those areas anyway and no way to support most of war ..they would need supplies..
best course is to thus not approach these areas but to surround and isolate it first ..armenians are withdrawing in hopes of drawing in the azeri for ambush
They could have a lot of supplies. And if they are determined to hold the position, it will be very hard to dislodge them. Whats more important than supplies is the ability to retreat if necessary. If they know, they are being cut off, and its permanent, they will retreat or desert.