I run a command like the following
httrack <https://www.website.com/data/> -O /home/tmp/  -*master*  -c1 -%c1 -v 

However, after a while, I get kicked off with a 403 error because the
webmaster explicitly states no more than 10 requests per second, and I see
"11.6 requests per connection" in the output.

I know I have one socket  ( −cN, −−sockets[=N]) that only has one
connection per second ([−%cN,−−connection−per−second[=N] ] ), 

Is there any way to further limit requests? I have tried
--connection-per-second=0.1 but this still does not seem to target requests
per second.