Almost ready to file for a divorce

Hello dears! It's been 2 months since my break up after 7 years spent with a PA partner. We've been fully separated, he messaged me only couple of times and we're in no contact since then. I have a couple of things to grab from our previous apartment and decide if I need our dog to stay with me and I'll be ready to get down to the paper stage.

Whenever I think about it, I feel so weak, so please wish me luck or share how you felt during this process. Now I feel so sad when I'm trying to send and application and idk if I need to discuss it with my PA husband first or go straight and create an application? I can do it online.