Hi, I have a male sg. His age is about 2 and a half month. Then, I just bought a new female sg and the age is about 1 and a half month. Is it ok to make them together or should I wait until they grow up?

I would start their bonding process as soon as possible since they're so young. If they're friendly with eachother and aren't aggresive you can house them together. It will be harder (but still possible) to bond them together once they're older. Is the male neutered? If he isn't he will need to be or else you will end up with a whole colony! Suggies can have up to 6 babies a year!
Congrats on your new baby!

i agree on the neuter the male, being a new owner you shouldn't start by
having babies.

I might think about putting them together after the male is neutered. But we have done several introductions and some of the gliders were almost 2 years or older and they moved in together as a colony JUST fine, but we also follow the
introduction instructions pretty closely. you shouldn't just put them
together, they may fight for their territory and one could be killed.