Thyroid support for amalgam toxicity is a necessary step to be considered in treatment. A subnormal temperature on waking is a good indication of a need in this area. Even a tiny subnormality could be significant. A knowledgeable practitioner will be able to advise here. This is an important aspect not to be neglected even though it may appear that amalgam poisoning is purely a physical matter.
Some people react to nutritious food and sound vitamins because the metabolic pathway is disturbed.
This is correctable using a combination of intolerance correction and emotional stress release with the food in question. Other stresses relevant to amalgam removal are numerous but fear of the dentist could be something to be worked through to make amalgam removal less traumatic. There are books dealing with emotional stress release and courses. I teach my patients the elementary techniques as part of treatment and add on to that when they have mastered the previous instruction through practice. It gives people their own 'tool bags' to use at home and each visit adds to things at their own fingertips.