To reduce your intake of metals, remove the sardines from the tin before eating them.

I'd advise against it.

Even though sardines may have a lower amount of mercury than most other fish, they still contain it, and mercury is very hard for the body to get rid of. It accumulates and doesn't cause problems... Until it suddenly does. And it's not fun.

A friend of mine ate fish 4-5x weekly (not just sardines tho) for about 6 months, and he ended up in the ER and on a very restricted detox diet and meds for almost a year.

So, even though sardines are low on mercury as it gets, I'd limit myself to at most every other day.

That’s my wife’s favorite because they use olive oil and not soybean. We always have a stack of cans at home and we probably eat around 3-4 a week. From what I understand, smaller fish have less mercury, and I assume sardines have short lifespans so that also helps with heavy metal exposure.

If you eat a tin of sardines each day, you have a lot of life choices to think about...

Predatory fish like tuna accumulate extra mercury by eating other fish.

Sardine (Wikipedia): :

Because they are low in the food chain, sardines are low in contaminants, such as mercury, relative to other fish commonly eaten by humans, and have a relatively low impact in production of greenhouse gases.

For comparison (bluefin tuna):

since bluefins require so much food per unit of weight gained, up to 10 times that of salmon, if bluefins were to be farmed at the same scale as 21st-century salmon farming, many of their prey species might become depleted

EVOO might or might not be better depending on which study you look at. EVOO generally tastes better and so it is what you should be using when eating raw. EVOO spoils very quickly so if it isn't fresh it is bad for you.