While this is how I’ve chosen to phase in my SPX option strategy, the principles of phasing in can be applied to any new trading strategy.
Feb-Mar: 97% cash, learn and practice mechanics, minimal loss
Apr-May: 97% cash, learn and practice risk management, no loss
Jun-Aug: 70% cash, begin to scale, increase theta, first profits
Sep-Dec: 40-60% cash, measure ROC
2019+: 40-60% cash, increase ROC