with the right soil depth, humidity levels will vary and your monitor can choose. make sure soil is over 1ft deep for young. as they get bigger the soil should get deeper.
i can't really make any suggestions unless you post info on your set up. then i could tell you what needs tweeking and adjustment.
basics- soil as substrate at least 1ft. 80-85F cool end; 100-120F hot end. thermometers will tell you this, you need a tempgun to get surface temp readings which should at least 130F.45-50 watt GE outdoor halogen floodlights work best. elevate your basking area to get desired temps. uping wattage does not help.
feed insects while young then switch to rodents and chicks as it gets bigger. the growth rate on
BTs is phenominal. one keeper i spoke to had one that shot up 4-5ft in a year's time. this is natural and significant to the health of your albig. a stunted growth makes for a shorter lived animal.
some of this may sound like a broken record you've heard before. but that only reinforces that it is correct. if it sounds new then great, i didn't type all that for nothin'. lol.
good luck with your albig. if you can get some pix up and describe your set up. i'm always glad to share the knowledge.
varanus.net and mampam.com are sites with good info. anything by Daniel Bennet can yield insight into monitor husbandry and behavior