3/4 of the bottle? And you’ve driven it?
Personally I’d drain and refill the system. Rub some coolant mix and some window wash fluid between your fingers. You’ll find the coolant mix slippery and the window wash not. As a matter of fact, you can probably wash the slippery coolant mix off your fingers with the windshield wash.
The reason for the slipperiness is the additives used as corrosion inhibitors and lubricants for the water pump. You may have effectively washed much of these additives off the surfaces of the engine’s insides and the water pump. You want the cleaning fluid (window wash) out of the system and the corrosion inhibitors and lubricant back on the engine’s internals…at the proper strength.
JMHO. Why not spend $5 to protect the insides of an engine worth a few thousand.