Laravel Eloquent: Load relations if other relations do not exist

Question

Imagine the following example:

User::query()
 ->with('vacationDays')
 ->with('schoolDays')
 ->with('sickDays')
 ->get();

Is there any way to only eager load the schoolDays relation if the vacationDays has empty results? And only eager load sickDays if both the others are empty. The objective is to see if the user is busy or not, but also not doing too many queries. It must use eloquent features. Thanks.