On the off-topic of dogs, +1 that Cesar Millan is a joke. He's recently been catching up a bit on even just the common current knowledge and methods on dog training, but his old "training methods" were a wreck before. Did you know he doesn't even have certifications or training on dog training or behavior, he was a DOG GROOMER who decided he wanted to make a tv show. Actually because of this guy, dog training on pets with general owners backtracked at least 30 years back into dominance/punishment methods, before getting back on track again just recently. :/ His clients on the show also don't know their left hand from their right. The show is also obviously edited to only include the "successful" footage, and I don't doubt for a second that many of the dogs who were having fear related issues backtracked as well, after they're done filming.
Back to snakes LOL- I agree, it would be a good idea to let Wheatley chill and grow up a bit. Even just handling him twice a week for 10-20 minutes only would be fine. You can trust that when he gets bigger, maybe around 500g, he will naturally become chill and act "socialized" with no extra work on your end.