Uh, I trust you, but man I hope you're wrong and that we secretly have more.
On the bright side, our pals in the Ukraine are actually showing us quite a bit about the capabilities of Russia's military (or lack thereof).
This thread has some really good discussion. As someone who does work in this area, I should emphasize that the U.S. does not have a missile defense system capable of defending the American homeland from the Russian nuclear arsenal. The U.S. has a very limited capacity system based in CA & AK that might be capable of providing some protection against a very small (single digits) ICBM attack against the U.S., but even there, there is no guarantee. In fact, the one thing that would sharply increase the risk of a Russian nuclear attack against the U.S. would be a Russian belief that the U.S. was soon to implement a missile defense system capable of securing the American homeland against Russia's arsenal. As grim as it sounds, the U.S. and Russia (and, before that, the Soviet Union) have tacitly agreed to hold one another's cities hostage with nuclear weapons to prevent nuclear war.
I only mention this because it explains some of the tightrope that the U.S. has attempted to walk in responding to Russia's invasion of Ukraine.