How to give him space

Hello everybody I need some advice.my husband said he wanted a divorce but agreed to try and work things out but I feel like he's so set on us failing. We've been together for 7 years and had our fair share of problems but all usual fights that couples go through. I'm trying so hard to fix stuff and coming up with ideas I think might work but I can tell he doesn't wanna do them he says things like I'll think about it. Now all the while of all this he's also over seas so we're long distance. I feel like he needs and wants space but I almost feel myself caving everytime and texting and trying to fix it which I think is making him shut down more. I can't think of anything to help the situation. I have a small window to fix things and he's not letting me try.