Hence the D in DELAYED Onset Muscle soreness 
Diet has a large impact on recovery so don’t overlook this, adequate protein for muscular repair as well as plenty of foods rich in vitamins & minerals.
Additionally the volume & intensity of your sessions, if progressive, will continue to deliver DOM’s. If this stagnates then you should find that as you become conditioned to handle those loads and that volume you’ll experience less. DOM’s are partly a response to a new level of stimulus.
A little bit of SMR and restorative blood-flow will help speed to the recovery process too.