For instance, PAK FA is a great jet, but it is apparently expensive. So why not find a middle ground? Maybe the components used in PAK FA can be used in the Su-35 and Su-30SM in the future and more purchases of those jets with modern equipment onboard will also do the job just fine and be significantly cheaper. And thus be easier to purchase and budget. Same with destroyers. Instead of those, purchase more frigates to get more numbers in, and modern frigates from Russia have as much or greater firepower than most destroyers anyway. Maybe change the outlook of all the different types of aircrafts being acquired and or maybe armored vehicles, etc etc etc. It doesn't mean cut number of procured systems, but it means changing the types of equipment to be purchased to reduce overall costs. Lots of factors.
Edit: and yeah, you are also correct that the 10% budget cuts will happen only if the indicators to the economy are the same in the next couple of months.
It might be better to phase out much of the old equipment, and buy new. Cutting down on size and decreasing conscript percentage would also be a good move. Let the young men get jobs, go into labor force etc, boosting the civilian economy, etc. Go full volunteer maybe(big maybe, I don't know the current balance).
Back in the 90s, Russia put nearly all of its money into R&D, now its paying fruit. Better to eat that fruit instead of preserved canned food.
Besides, buying Armata/Kurganets/Bumerang would do far more for the economy, imagine how many people are employed in designing, testing, creating,etc. Same for PAK-FA as well.
However, somethings still have to be cut, but not all the way. Instead of building lots of frigates to substitute for Lider, spend the money on testing for Lider, things like testing integration of its systems, radars, missiles, etc. So when there is money, Lider can start without a hitch.
There are some things that just have to be maintained.