Welcome to the forum! Sounds like you have done some good research on your enclosure, which is great. It may also help if you could get a couple pictures of your set up so that we can see it in action. That will give us an idea of how your lights are mounted and other possible issues.
My first thought, as your temperatures all seem good, is that it simply may be that it is being handled too much for a new lizard. They usually take a bit of time to settle in and with frequent handling this can make the issue take longer to resolve than normal. At three weeks it should have acclimated by now, but some take longer than others.
Do you have a reptile specialist vet in your area? Its always good with a new animal to go get a quick checkup with a reptile vet. That way you dont have to worry so much about past care and the present state of the animal.
My first thought, as your temperatures all seem good, is that it simply may be that it is being handled too much for a new lizard. They usually take a bit of time to settle in and with frequent handling this can make the issue take longer to resolve than normal. At three weeks it should have acclimated by now, but some take longer than others.
Do you have a reptile specialist vet in your area? Its always good with a new animal to go get a quick checkup with a reptile vet. That way you dont have to worry so much about past care and the present state of the animal.