@ba66e77 tinned lentils are full of water and cooked. those are their dry measurements.
100 g of lentils = 300 g cooked. So If you eat 100 g of canned lentils, your protein is really only 8g.
Btw, 2100 is super low. I am 5'4 and my cutting diet is 2100. How tall are you? I am at 2100 and...