Help please!

I should've asked sooner :(
I'm pet-sitting for my cousin while she's out of town. Today's the ninth day and she'll be back tomorrow night. Titan, her year-old beardie, will NOT eat for me! The first 1-3 days I thought he was just nervous about being away from home. But when he just wouldn't I started to get worried. I tried dubias, crickets, carrots, lettuce, he wouldn't take anything :( He hasn't noticeably lost any weight...
I feel so bad. I've never kept beardies so idk what to do..
Thanks

I Google search and found Raising Bearded dragons it had a lot of reasons your cousin animal isn't eating and ways to get it to eat sorry I can not be more assistance best wishes always :oops:

They need the stimulation of proper lighting and/or natural sunshine, and they need some pretty warm temperatures for basking. When they aren't warm
enough, or don't have the right photo-period, they get the "blahs"! It's also possible he's not healthy, and maybe he came to you that way. Good thing the
owner is coming back soon.

The causes of why a beardie would stop eating is so varied, ranging from needing a new uvb light to impaction (eggs if it is a female or from eating substrate). Parasites also can cause lack of appetite. New caretakers don't really stress out a l hungry reptile much... If they are hungry, and their husbandry remained the same, they don't mind who feeds them. When a live prey item does not even trigger any response, that is a red flag that something is wrong. They may be picky about salads but beardies love live feeders. I would suggest that the owner double check the tank's basking temp, cool temp, how old and what type of uvb is he or she using, what type of veggies were used, eliminate all loose substrate from the tank, bathe the lizard to see if it has not pooped for days, what supplements were used, if it is a female, is there an area prepared for her to lay when needed.