Protein vs calories

I’m trying to lose fat and gain muscle. I’m maintaining a calorie deficit, split training at the gym and swimming.

I have a conundrum that I face nearly everyday.

It’s the evening. I’m at -649kcal. I’ve eaten 70g protein. I weigh 68kg. I’m not hungry but I’m aware I could get more protein in. Do I:
– don’t eat anything else because I’m not hungry or
– have a protein shake with milk which would add 35g of protein but also add 350calories. So I’d still be in s deficit but a really small deficit .

Would you have the protein shake or go with the bigger deficit?

Protein vs calories