Clearly i'm not going to be able to add any advice better than Wonka and Cadet have given you but I agree with them - if your really ready to file then just file and tell him thats what you've done (trying to hit the balance of courtesy)
But I suspect you already know that whats prompting this is that he hasnt answered you when he said he would - calm those expectations
but i do think its a healthy line of thought to know that you deserve better than someone who isnt sure its what they want (not sure whether they can do it or afraid of getting hurt are a different story)
Enjoy the power (and peace) of silence
Both mid 30s, 2 young kids BD 7sep14 XW moved on long ago, now living with OM1 D paperwork in progress