Manually Set Value in Date Field

[MartinVargas]

Hello community, I am working with a portal in power apps. 

I am using a script to disable two days after the current date. This is working fine.

But it happens that if the user manually enters any date in the field "delivery date" it defeats the whole purpose of the script. That's why I'm looking for a way to remove/disable the "manually enter" option so that the user doesn't enter any date.

For example, the date shown was entered manually (06/05/2002). And I want everything that is entered in this field to be through the "Choose Date" button

Can someone help me here? 

I would appreciate it guys