Hi dear your stamina doesnot just depends on protien intake in your meal. You should also look into consumption of processed and packed foods. Avoid all the sugary foods.
In regards to protien yyiu can choose any supplements with low
sugar and high protein.
Ideal time would be in evening snack time.
Next Steps
consult with any professional nutritionist for detail diet chart
Health Tips
try to have low calorie diet and exercise regularly for good health.