I just got a LTC U Phantasticus. I've had him for about a week in a temporary habitat while I'm working on his natural viv. My question is though that he seems not to take any interest in Dubia. The previous owner said he only accepts crickets but I'm fairly confident he hadn't tried roaches. I also heard roaches seem to be a favorite with Phantasticus. Is there any way I could switch him over to roaches? He doesn't seem to be accepting them yet and I've attempted 3 times to feed them to him. I'd rather not be buying crickets all the time but will if I have to of course. Will the natural viv stimulate his appetite or make him a little more open to new foods maybe? Is it possible he just doesn't want to be hand fed? Thanks!