brumating or old uvb?

[Carnivorouszoo]

Ok so 2 weeks ago Mojo started sleeping more and eating fewer feeders but still eating greens. 1 week ago I ordered the new UVB light. Today I put it in and within 30 minutes she was out basking and asking for attention. . .2 weeks isn't long enough for to have brumated is it? Was this a freak wake up or could she have just been sleeping because she felt off from the uvb not working right? I use reptisun 10.-0 tube bulbs and had gotten the old one late July or early August. I had planned to replace it in January but to be safe went ahead and bought the new one. I suppose I'll know for sure after a few days under the new bulb but wondered if anyone might have experience with this.