There are some schools of thought that say addicts need to go completely teetotal forever.
For example, some former alcoholics never go back to drinking moderately, but stay teetotal forever, and this is not considered an extreme stance to take.
[Nb I'm not implying alcoholism is remotely as bad as paedophilia].
If a paedophile claims to be a type of addict, then by the same analogy he should be kept far away from any contact with children, any sex, any Internet access, for the rest of his life.
I know that sounds impractical, beyond a prison or monastery or something.
But a suspended sentence, living with your young son, with full access to the internet, and a "normal sexual relationship" with your unwilling wife, just ain't it.