This would be an excellent time to scale back a little bit of spending on our nuclear arsenal.
Russia is no longer the world-ending peer threat the USSR was, and has become chaotic enough that MAD no longer makes complete sense in the current context anyway. Us disarming some additional warheads would be unlikely to encourage them.
China, on the other hand, is building up an arsenal. If history is any indication, the size of the arsenal they build will be in some relation to the other existing arsenals. Thus, if we reduce our arsenal, they will need to make fewer warheads to reach some kind of parity with us. If they don't need to make extra, they won't, those things are expensive to keep around.
So, we can have an outsized effect on future nuclear arms totals if we scale the US arsenal down now. And we'd save some money every year.