You cannot permanently increase height in 1 week if your growth plates are closed
Get 8–10 hours of sleep every night
Eat enough protein daily
Include calcium-rich foods
Include vitamin D sources
Stay well hydrated
Do regular stretching exercises
Practice good posture
Do hanging exercises if comfortable
Do swimming or skipping for general fitness
Avoid slouching while sitting and standing
Wear shoes with thicker soles if you want to appear taller
Maintain a healthy body weight
Avoid smoking and alcohol
See a doctor if you are still growing and want a height check