Let it go.
I will always believe the experts who participated in the project and people who monitored their voices from the moon, etc.
from Wikipeda:
The Apollo missions marked the first event where humans traveled through the Van Allen belts, which was one of several radiation hazards known by mission planners.[39] The astronauts had low exposure in the Van Allen belts due to the short period of time spent flying through them.[4][5]
Astronauts’ overall exposure was actually dominated by solar particles once outside Earth’s magnetic field. The total radiation received by the astronauts varied from mission-to-mission but was measured to be between 0.16 and 1.14 rads (1.6 and 11.4 mGy), much less than the standard of 5 rem (50 mSv)[c] per year set by the United States Atomic Energy Commission for people who work with radioactivity.[39]
The third belt was temporary. Have you ever seen a graph of the belt around the earth? The belt was observed around 1958.