@Hartinez I don't really understand the meaning of buds in this context?
Here’s a few pics. These are on an englemann spruce. First pic shows last years growth (green), this years growth (red), and the new buds that will open next spring (black).
The second pic shows back budding.
If and when you do cut back, try o make sure to cut back to a bud or a branch that has a bud. It’ll probably die if it doesn’t.
Please note though, that I’m new to spruce, but have gained a wealth of info from this site and from watching Mirai videos online.