Dr Google, is unqualified.
The "normal" may be normal for many but abnormal for him. Do you have a series of his results to guage the figure? As an example, a 67 year friend of mine has had PSA 1.7 for several years, so seemingly all good for his age.
In 2018 PSA 1.7, but 1 PCa site found, PCa treatment deferred for other reasons, 11 months later a second site found.
RRP early November, TWOC completed last week, he is already dry.
Only you can decide if you are satisfied that there is no need for concern after taking to all the available health care professionals.
hope all goes well.
dave