Professional websites, clear contact information, and transparent policies suggest legitimate operations
Visualization techniques, such as imagining burning sensations being put out by cold water, or concentrating on imagining what your pain might look like can also help to draw focus away from the pain itself, and help you reframe your experiences of pain or discomfort
You can certainly combine the shots in the same syringe, but I do not recommend it (unless you are an expert), because if you get an air bubble in the syringe, as you extract the liquid from the vial, you will need to slowly return the liquid into the vial and re-extract it again till theres no bubbles
If you simultaneously reduce dose, change injection timing, and switch sources, you will not know which change helped
Special Dosing Situations for Severe B12 Deficiency In cases of severe Vitamin B12 deficiency, special dosing is key for treatment