(ELI5) when babies are raised with bilingual families, are they learning it as just one jumbled language, or as two separate languages?

Question

Also would it become difficult to discern and seperate them when they join school for example, and interact with people that only speak one

In: 37

Answer 1

I became quad-lingual.. Gujarati, Hindi, Swahili and English but it’s now a “jack of all languages and master of none” type of situation.. born to Gujarati parents in Tanzania, sent to school in India till 4th grade where I learnt to read and write in Gujarati and Hindi along with English. Then moved back to Tanzania to pick up Swahili. Now I can only read Gujarati and Hindi but can’t write after not writing it for years and my English speaking lacks fluency