How would you express "I've fallen behind" as in I've fallen behind in my emails

to fall behind → trennen pye, fè reta, fè parese, rete dèyè, pran twòp tan, pran twòp reta

I've fallen behind in my emails 
Mwen pran twòp reta pou'm tcheke imèl mwen
or
Mwen pran twòp reta pou'm imèl ou.

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