SQL & PL/SQL

I have wanted to use nested records in the below mentioned way

Declare
Type emp_type is record(
ename emp.ename%type,
eno emp.eno%type
);
type emp_whole_type is record (
emp_detail emp_type,
dob date
);
emp_type_1 emp_whole_type;
begin
select ename,eno,dob into emp_type_1 FROM EMP; /* Assume only one row is in emp table*/
end;

What i wanted is to restrict the into clause length because in my original example i have to incorporate lot of columns which leads to lot of errors every time if i change something which means i don't want to use like "emp_type_1.emp_detail.ename, emp_type_1.emp_detail.eno,emp_type_1.dbo".

I have even tried with below syntax. It didn't work out i know it's not object.

SELECT EMP_DETAIL(ENAME,ENO),DOB INTO EMP_TYPE_1 FROM EMP

Is it possible to minimize the into clause. Appreciate your suggestions.