how to run trigger on table on postgresql except one column

I'm using postgresql 13/14. lets say I have a table with column A,B,C,D,E I have created a trigger for the table that would run every insert/update/delete. (but in this problem, I only need it for update actually, the trigger function is just a bit generic) it has run good for now. problem is, column E is only for checking, and it's not needed to run the trigger if it's updated. my trigger function, is now like this:

CREATE FUNCTION public.fnc_check()
    RETURNS trigger
    LANGUAGE 'plpgsql'
    COST 100
    VOLATILE NOT LEAKPROOF
AS $BODY$
BEGIN
	if NEW.AOLD.A and NEW.BOLD.B and NEW.COLD.C and NEW.DOLD.D then
         -- do something
    end if;

	RETURN NEW;
END;
$BODY$;

problem is, on my real table, there are like 20-30 columns and it's a hassle to make if for every columns except for column E. so, is there a way to make sure the trigger only run for column A,B,C,D and not E (without using if for each other columns except E) ? thx very much