If you have nothing new to launch and only a couple of ads are carrying the account, the immediate answer isn't to lock yourself in a room and research for 3 days.
It's actually to go inside the account, find the ads that are already winning, and extract every last bit of insight you can.
Feed it to Claude, then go back and forth with it to create iterations that are rooted in data.
Sometimes new just means a fresh perspective, not a novel idea.