When I read this something stood out for me and I wonder if it may be what is happening for you. I remember when I was deep into Vipassana I eventually got to a point where I no longer experienced feelings as affective phenomena but rather only as physical sensations.
Initially I thought this was a good sign, some kind of progress towards freedom from them. But later on I realised that it only made things worse, because it cemented the feelings as something that was now unreachable/unchangable. For how could ‘I’ change a physical symptom, it’s not like ‘I’ can stop feeling pain or tell ‘my’ heart to slow down by choice.
Years later when I began applying the actualism method I had to unravel this mess. I remember symptoms of feeling tight, tired, uncomfortable, painful etc. It was like ‘my’ whole body was infused with a disease. I remember experiencing daily these episodes of intense ‘physical discomfort’, later on these turned out to be affectively rooted though.
The tip that allowed me to deal with this thing was @claudiu encouraging me to find the ‘affective flavour’ of the feeling. That instead of seeing only the physical symptom I could ‘taste’ that unique flavour of the emotion that was behind it (even though at the beginning it seemed the emotion was not there). What I did was develop the willingness to ‘taste’ and then fully ‘live’ the emotions which were at the root of this ‘physical discomfort’.
It took a while of consistently chipping away like this (at times this was quite intense too) but eventually they disappeared completely and same for any symptoms of burn out like constant tiredness, feeling painful, tight etc.