I agree with Erik's answer but I'd like to add a few things.

Since you seem to speak your mother tongue with your parents, they are probably fluent in it? Have them speak your mother tongue with your child, only translating into English if the child doesn't seem to understand. I know a few people who's grown up learning a second language by speaking it with their grandparents. You could also chip in and help the child learn basic words by using the "grandma/grandpa says it like this"-method. "It's a car, but grandma says [insert word here]".

Additionally if any courses are offered in the language near you, the child could learn the reading/writing part there, or maybe the child could learn that from the grandparents as well?

I agree with Erik's answer but I'd like to add a few things.

Since you seem to speak your mother tongue with your parents, they are probably fluent in it? Have them speak your mother tongue with your child, only translating into English if the child doesn't seem to understand. I know a few people who's grown up learning a second language by speaking it with their grandparents. You could also chip in and help the child learn basic words by using the "grandma/grandpa says it like this"-method. "It's a car, but grandma says [insert word here]".

Additionally if any courses are offered in the language near you, the child could learn the reading/writing part there, or maybe the child could learn that from the grandparents as well?

I agree with @Erik on this one but I'd like to add a few things.

Since you seem to speak your mother tongue with your parents, they are probably fluent in it? Have them speak your mother tongue with your child, only translating into English if the child doesn't seem to understand. I know a few people who's grown up learning a second language by speaking it with their grandparents. You could also chip in and help the child learn basic words by using the "grandma/grandpa says it like this"-method. "It's a car, but grandma says [insert word here]".

Additionally if any courses are offered in the language near you, the child could learn the reading/writing part there, or maybe the child could learn that from the grandparents as well?

I agree with Erik's answer but I'd like to add a few things.

Since you seem to speak your mother tongue with your parents, they are probably fluent in it? Have them speak your mother tongue with your child, only translating into English if the child doesn't seem to understand. I know a few people who's grown up learning a second language by speaking it with their grandparents. You could also chip in and help the child learn basic words by using the "grandma/grandpa says it like this"-method. "It's a car, but grandma says [insert word here]".

Additionally if any courses are offered in the language near you, the child could learn the reading/writing part there, or maybe the child could learn that from the grandparents as well?