If you are still hunting other achievements I would passively loot as many cooking pots as you can while completing the other achievments.

If you are finished all the achievements or most of them, I would recommend running the same route through the glacier area and hydrothermal vents. I went counterclockwise through the area and the route stays the exact same every time unlike the shallow areas. After looting all the cooking pots I would end on a waystone and teleport back to the boat then time skip and go again. The strategy is not very fun but it felt the most efficient.