I have a savannah monitor, widely recognized as one the 'tamest' monitor species out there. I was in a similar situation to yours, I got my monitor because so many people insisted that they had tame, healthy monitors. I wanted a tame, healthy monitor. Turns out there really isn't such a thing, if they're healthy you have to worry about your safety when you're interacting with them.
I think that it took me about 6 months to 'tame' mine. You start the process by feeding him and giving him lots of privacy. Then you feed him and slowly give him less privacy. At this point you can start leaving your tongs in/around where you dump the food source in. You'll eventually get to the point where he'll eat off the tongs. Then you'll get to a point where you can coax him to climb on you to get food. Wear gloves! Keep going slow, never grab him, and you'll just become another piece of furniture. Monitors aren't going to tolerate handling as well as other reptiles because your body temperature isn't hot enough to be considered a heat source. Most other snakes, lizards, etc are happy with a 98 degree basking spot. Monitors want 140+ so you're worthless to them for hanging out on.
It has been about 2 years and my monitor is quite unafraid of me. No hissing, whipping, biting, etc. Well, correction, no biting in defense. Just walking in the room gets him to come out to see me and I can usually pick him up for a minute or so before he starts to get antsy but that little SOB tries to eat me frequently. This may/may not make sense to some but because of all the time it took for me to tame him he's actually one of my favorite animals even though I have to take evasive action to keep him from trying to chew on me.
I think the best thing that you can do for your monitor right now is to build and get it into its adult enclosure. My sav has an 8'x4'x4', I think the peacocks needs the same footprint but more height? Fill the bottom 2' with dirt (allows burrowing, helps prevent dehydration) and fill it with all the hides previously suggested. Monitors are smart, they'll learn you're not a predator in time, just don't expect to hang out on the couch with him like a BTS or beardie.
