Re: Teaching Urdu
if you know more than two languages it gets easier because your brain gets used to adapting.
If I remembered all the languages I’ve learned up till now I would know about 6 but I don’t (due to only being exposed to them for a couple of years) I’m just left with recognizing the languages, being able to pick them up easily and can pronunciate them.
So parents let your kids absorb different cultures and languages and blow their minds 
or expand them whichever you prefer