Signed up for the Evergreen Ads course and implemented. Together with an order bump, I have seen a improvement in ROAS these past 3 days, but I'm still underwater. Waiting for the New Year's effect to move off before deciding what to do next. Any advice on whether I should : a) Start testing variants of the headline/creative/lead-in b) Leave it for a longer period of time to let the Meta algo do it's work