You can open the three finger drag by follow, but it may case some delay.
1. From the Apple menu, choose System Preferences.
2. Click the Accessibility icon.
3. Choose Mouse & Trackpad from the options on the left.
4. Click Trackpad Options.
5. Place a checkmark next to "Enable dragging."
6. From the related pop-up menu, choose “three finger drag” so there's a checkmark next to it.
7. Click OK.
From: https://support.apple.com/en-us/HT204609

You need to enable 3 finger drag:
1. From the Apple menu, choose System Preferences. 2. Click the Accessibility icon 3. Choose Mouse & Trackpad from the options on the left 4. Click Trackpad Options 5. Place a checkmark next to "Enable dragging" 6. From the related pop-up menu, choose “three finger drag” so there's a checkmark next to it 7. Click OK
https://support.apple.com/en-us/HT204609