Time frame from bolt to lumber can vary with species, and what you wish to have from it for a project...
Maple decays quickly...However, this can be a "controlled decay" whereby the wood can be induced (or allowed) to Spalt, which for this species can be a very desirable natural effect.
In general, of logs after being section into bolts...and not milled immediately...need to be double end sealed, debarked immediately, and raise off the ground a full 300mm (~12") minimum.
Storing underwater (when possible) is better and an excellent conditioning method for fine wood material later harvested from a bolt.
背割 Sewari (aka "spine splitting) treatment of a bolt with a chainsaw will cause some minor loss yet also vastly control interstitial tensions within the bolt and later the wood it yields as well tends to be much more stable no matter how you mill it unless the tree was full of "cross tension" to begin with...Which Acer (Maples) can have...Either way, it is, or can be a helpful addition to the treatment of bolts that will not be milled immediately.