If you have difficulties with hand tremors, dexterity, or fine motor control, you can adjust how the iPad touchscreen responds to tap, swipe, and touch-and-hold gestures. You can have iPad recognize faster or slower touches and ignore multiple touches. You can also prevent iPad from waking when you touch the screen, or turn off Shake to Undo if you unintentionally shake iPad.
Go to Settings or > Accessibility > Touch > Haptic Touch.
Choose the touch duration—Fast or Slow.
Test your new settings on the image at the bottom of the screen.
On a Use AssistiveTouch on iPadAccessibility features for mobility on iPad