Well this is what I've done on occasions
Deload, say you bench 315 for 12 then you would be doing 225 for 12 reps 2 working sets.... you get the picture. Same goes for all the other exercises.
Food, eat every 2-3 hours... lower carbs, increase fats..not sure how much protein you eating but aim for a bit less than you are eating now since you are not going as heavy or hard on the workouts.
Workouts 3-4 days a week max no more than one hour each.
Occasionally I used to throw in a heavy set in this mix but nothing crazy just look to get a good pump because it's very easy to get hurt pulling something.