Re: too much oil?
Short term, probably not. But long term it's not good.
Dump the rest of that fuel in your car, and start with fresh fuel. Use a shot glass or marked bottle, a clean (new) 1.X gallon can. Pour some of the fuel in, add the oil. Mix well. Add some more of the fuel (1/2 gallon), mix well again. Add the remainder of the fuel. Mix well.
I do this at the gas pump with no difficulty because I have a plastic measuring squirt bottle for my oil. Made it easy when I did the castor oil blend. The beauty of the pump is I can meter in near perfect one gallon of gas.