This is an interesting phenomena. I have observed Venus in the daytime when the planet is on the local meridian, and have contributed observations when Venus is at half-phase --- the so called Dichotomy of Venus. However, attempting to observe Venus 8 degrees from the Sun is a risk that I would be unprepared to risk. The reason is that exposing the eyes to direct to sunlight though any optical telescope will cause instant blindness.
IMPORTANT CAUTIONARY NOTE
I would honestly suggest visual observation near the sun during daylight is
very dangerous without adequate shielding from the sun's ray.
(Between about the 12th March to 6th April,
unless you are experienced, NO ONE SHOULD TRY IT!)
If you
REALLY WANT TO DO IT, use an eye patch to stop glimpsing the sun as its brightness. Sunlight a bedazzling effect that stops you seeing very much let alone the crescent Venus - probably buggers up your deep-sky observing if you do it too long!
Also try and place the telescope in the shadow of a building, where it is impossible to point the optics at the Sun.