Wait patiently in the chao garden for a very long time make sure you take care of your chao of course after a long time take it to the doctor to check its age it should of gone up if not wait more.
No you can not make a chao age faster
It has to be a normal type dark chao or running type dark chao when it evolves make sure you never increase its stats except for in running or stamina.
Yes, it can like as many people as it wants but pet it a lot with hero char. if you want an angel chaos chao and the opposite with if you want a dark chaos chao. or use both to make nuetal (light chaos chao)
Leave yourself in the chao garden and go do something else
well there are two ways to get a knuckles chao 1 use an action replay but if you don't have one try getting a red chao on make it an neutral none chao and give it boars feet
No you can not make a chao age faster
Your chao will age faster if you spend more time in the Chao Garden with your chao.
Either get a two tone grey chao and make him a shadow chao or a two tone blue or sky blue chao and make either of them a shadow chao or a two tone black chao.
you can't really make a gold chao unless it's ancestors were gold chao.
You can only make hero and dark chao in SAB2. Also Sonic chao are neutral so if you give your chao a lot of run animals you will get a Sonic chao.
You can't make a Chaos Chao look like Sonic, but you can make a regular Chao look like him.
In 222 CE, Ma Chao died from illness at the age of 47.
Yes
"Like most things, Chao can die... A Chao's life usually lasts about 7 - 8 hours on the Dreamcast. On the Gamecube the Chao has an age. When the Chao reaches 5 years old* it will reach the end of its life, and it will cocoon and die after that. But, if your Chao liked you, it will reincarnate and leave an Egg. If it didn't, then sadly your Chao will not reincarnate and will be gone forever. *A Chao Year on the Gamecube lasts around three real life hours. If you care for your Chao extra well, it's years will take longer. Likewise if your Chao is unhappy and get hit alot, it will take shorter to age and in turn, die quicker. Also note, that some studies show that when a Chao breeds with another Chao, its lifespan decreases. The age of your Chao is shown in the Medical Chart with the Chao Doctor (in the Kindergarten)" - Chao Island
It just the way the game goes.
make your chao a normal run type
Just make a knights chao, just make it get red chaos drives instead.