Yay another chin! Congrats
We've had our Merlin for over three years now, and it's estimated that he's four and a half. We got him from a bad situation, so gaining trust and building a bond took about a year, but it was so worth it. So I guess my main bit of advice would be to be patient. Chinchillas have very unique personalities, so you have to really get to know each other, and some chins are more personable than others, but they are very rewarding little creatures. If you ever have any questions, you can feel free to PM me