B6 in food will not hurt you. It’s a good and necessary vitamin. So good that it was thought that putting it in bread and cereal would help people. Because it’s water soluble it was long thought excess would be excreted. They have learned it stays in tissue (cells) 2-5 years. Medicine is learning all the time.
In healthy adults that get a healthy balanced diet there should be no need to take any supplements.
The multi billion dollar supplement industry does not want to hear this.
Eat healthy food. Don’t take supplements is my humble advice. If you’ve had high B6 or B12 readings it will take about 6 months for your blood serum levels to read as ‘normal’ and up to 2 years for it to exit your system and for the myelin sheaths to grow back on the nerve endings.
If you’ve only had it a short while many will repair. If it’s long term (chronic) some damage will be permanent but you will get much better.
Lethargy, tingling, numb extremities, poor response to hot and cold (hard to control your body temperature), burning mouth and hot feet are some symptoms. You may get a couple. You may get them all. If it’s bad there is joint pain, bone pain and headaches; and gut and brain issues. It affects your nervous system.
If you have bad symptoms work with a trusted medical professional and always get blood tests. They will tell you your situation. This is too important to guess.
Do not be afraid of healthy food that contain vitamins.
Avoid fat, sugar and highly processed foods. And, I’ll say it again, don’t take supplements - a lot of on line advice is written by companies that make and sell supplements. This industry is not regulated and it makes billions!
Good luck. You are obviously aware, concerned and doing research. It will just take time (rest, light exercise, a healthy diet and no supplements).

As @lorry said, vitamin B6 eaten naturally in foods will not hurt you. The recommended daily intake of B6 is 1-3mg a day. It's when it's added to supplements at much higher levels that problems may occur.

Unknown to me, my daily magnesium supplement contained 60mg of added B6 and that caused blood levels to be very high, and according to my pathology report, it posed a risk for peripheral neuropathy. My blood results were normal within a few weeks of stopping the magnesium supplement and switching to a brand that didn't include B6. But it takes longer for B6 to leave cells (as lorry said) and there's no way to measure that. More is not better with B6. Just keep in mind the recommended daily allowance of 1-3mg when looking at supplement ingredients. Best to get what you need through diet.