Who knows what is going on in his head. That's exactly the point. You can't mindread, so don't try. You need to get out of his head and into your own. Looking for signs and signals in everything he says and does is a cheeseless tunnel. It won't get you anywhere, other than worked-up and stressed-out.
Good job not responding to the further texts of his. You say you are struggling with 180s. Wouldn't it be a 180 not to respond to the initial text? I didn't see anything in it which required a response. Keep your communication with him as to-the-point as possible. They say to treat the WAS like a cashier at the store. You aren't rude or mean to them, but nor are you going to engage them in personal conversation, or eagerly await their communication.
What do you mean when you say that you stay busy and GAL. What are you doing? What are your goals? How are you working on yourself? What are you doing to take care of yourself?
You are at the beginning of a long process, so have patience. (It is hard, trust me, I know.) You are stronger than you know, and there is a bright future waiting for you at the other end.
W 34 Me 42 Married 7 years together 8 0 kids 1 beloved dog BD 4/6/2018 I moved out 4/7/2018 I moved back in alone 8/05/2018 I file 3/06/2019 D official 5/7/2019