Start by defining what the redesign must change for customers and the business. A visual refresh without a decision about navigation, product information or measurement often reproduces the same problems in a new style.
Audit representative mobile journeys, not only the homepage. Collection filtering, variant selection, delivery information, cart behaviour and error states shape more buying sessions than an ideal desktop hero.
Before development, agree who owns product copy, photography, redirects, app approvals and final QA. Clear responsibilities protect the timeline better than an optimistic launch date.
Choose one high-value journey, document the current evidence and give the next change an owner, a success signal and a review date.