1 tips for sure.
A lot of inexperienced keepers get worried so much and start peeking, checking up on her, arranging stuffs inside, putting the bucket in and out, and essentially bothering her.
They forget the essential ingredients for your chams to successfully lay eggs is a complete privacy.
Without privacy, she will refuse to lay eggs; thus, lead to binding problem.
After you put the necessary furniture (bucket with moist sand), learn to give her ample alone time no matter how hard.
Good luck