Hi Roopa,
You should also try to make friends asap.
I have heard that Indians in US stay closely bonded. Try to find out about your neighbours, Indian groups, where basically families get together and have fun. You need to start doing this so that both you and your son will have friends. Once you make friends you can start visiting them or invite them over for lunch or snacks, etc.
You will all end up celebrating all festivals also together!
This will be fun for both you and your son. So try doing this soon

Cheers
Teju