Today, I am going to give my roommate/tenant an eviction notice.
I have been through something similar along time ago and I was super stressed and triggered like you. It is a very intense experience to go through when you are feeling afraid of the unknown things. I hope you have some objects for example like a stuffie to cuddle and calm yourself or some kind of special object to help you to ground yourself that you can carry in your pocket.
You are perfectly normal for what you have been through and experienced with this person. I wish you could have a friend to be with you today so that you will have somebody on your side that is there to watch your back for you and to keep you nice and distracted.
You can always do something like journaling your thoughts and feelings either here or in a notebook too, I have done that before if no one could be with me and I would reassure myself that everything is going to eventually turn out for the best for you. It is a process that takes time and it may have its own set of stresses.
Just remember to keep on deep breathing to prevent you from going into panic mode. Do things to focus on the present moment and do not what if yourself or should yourself either. It is going to end well for you.
You have been quite strong and you are taking good care of yourself right now and you deserve to have calm and peaceful life.
He is not going to like and as he is a manipulator expect some ugliness but hold steady and be a broken record just saying to him that it has not worked out as you wanted and he has to go and give him a time limit to get out.
Just in case he pitches a fit, not saying he is going to, you have the option of calling the police and having them escort him out until he calms down just in case he is stoned or whatever and does pitch a fit.
Try not to worry or obsess. I know easier said than done. You are enough to manage this and I am very proud of you. You have this. Just be prepared for the worst and do hope for the best. Maybe he is realizing that you are not going to be pushed around or manipulated anymore and may be looking to leave himself. It just did not work out like you hoped. Good luck crossing my fingers for you.