A lot of the advice from people is akin to telling someone with a snapped femur to "change their mind" about it, as if the "power of positive thinking" is going to heal the bone.
I'm sorry to hear that you're experiencing these feelings/symptoms @tarazkp, but thankful there's no evidence of more clotting.
Feeling disconnected, your head floating, and the feeling of impending doom, was exactly how I felt when going through a major clinical depression.
This can happen after a TBI/ABI, so it may be worthwhile exploring that avenue.
There's no 'snapping out of it' as many told me at the time! The brain chemistry is affected and requires medical as well as holistic treatment.
Do you tell a diabetic to 'think positively' and stop using insulin?
There's much written about TBI/ABI causing a major depression -
https://www.flintrehab.com/brain-injury-and-depression/
It's been a long road, hoping that you start feeling better soon @tarazkp.