Please help

I’m really worried about my beardie. She went into brumation and really didn’t start coming out of her caves until about a week ago. For the past month she hasn’t been accepting food and she looks really weak. I thought she just didn’t have an appetite because of winter brumation periods like past years until today when I started to notice how weak she really was. I scheduled a vet appointment but they won’t be able to see her until next week. I don’t know what to try and feed her since she’s even rejecting live crickets. I’m worried because she is almost 10 years old and feel that she is dying. Is there anything I can do? Anything to blend to put in a syringe to mouth feed? And if she is dying how can I make her more comfortable if anything to not prolong suffering?