Sleeping your life away is not going to change the outcome.
If you want your W to treat you with respect you will have to teach her how to do that. And that will require you to have a backbone.
In plain terms, your W uses you, manipulates you, controls you, uses sex as a tool to get you to do what she wants and will do just about anything to bring you back to the unhealthy dynamic the two of you share.
Look how the past 24 hours have gone. You asked her about her b-day and she said she had other plans. So you went about your business and once your W realized you weren't falling all over her to see her or wish her a happy b-day she baited you with nasty texts. Is that love? No. It's total lack of respect and manipulation.
You keep saying you don't know what to do but we are telling you. There are a few HUGE things you could do tomorrow but you have chosen not to even consider them because they are "too hard".
I can guarantee nothing will change at this rate. Not only will it not change but it will get worse and starting Monday your job will be thrown in the mix. Because you will have something positive to focus on that does not include her (less control for her) she will go all out to reel you back in.