I've read that thhhe military buildup in the 80s challenged the Soviet economy in precisely the areas where it was least competitive, rapidly advancing high technology. Things like look-down shoot-down FCS, ECCM and the like, which had to be cutting edge, rapidly developing and widely deployed, because resting on advanced western economies this was exactly what western weapons can achieve.
So I'd suggest as a partial solution the succes, or greater success of some advanced weapons programmes. The F111 programme could have gone better, building them in much larger batches so that the USAF gets closer to 1000 rather than 540ish, I'd also have the TSR2 enter large scale production. That way the Soviets would pop a hemorrhoid trying to build and interceptor fleet with advanced enough look-down shoot-down capabilities to counter some 1200 long range, low level theatre strike assets, about a decade before they found it possible IOTL. I'd also push through the order for 50 or so Blackbirds that Curtiss LeMay almost signed, that would cause the Soviets to pop another hemorrhoid at the same time trying to build an interceptor fleet capable of fighting off dozens of mach 3 fighter/strike aircraft.
There are others, such as the US ABM system, which could cover the MX missile in early deployment, or the B1A which could be in service while the B1B is developed. This would help cause the Soviets to implode due to their lack of ability to counter so many threats.