i think your temp might be to low is 73 what the temprature is at the bottom of your enclosure or the top. That could very well be an issue.
Temperature:
Baby/juvenile (<9 months): ambient 72-80F (22-26C), basking 85F (29C)
Adult males: ambient 75-80F (23-26C), basking 90-95F (32-35C)
Adult females: ambient 75-80F (23-26C), basking 85F (29C)
This is temp for vieled, but should work for yours aswell, care sheet on this species , on this website says this for temp
Adult: 70-80F (21-26C) ambient, 80-90F (26-32C) basking