A for-sure pronunciation of the word is "john-ruh."
But, you're still not tackling "l'il."
Like "L'il Abner" - do you say "Little Abner," or do you try to cut off the t's and end up saying "Llll Abner."
I truly think you need to be missing your Adam's apple (or your gag reflex) to say "l'il" correctly."
Is it too much of a challenge for you all?!?!