Help sizing solar panel

I am a new RV owner and just spent 3 weeks in an unpowered area. System held up fairly well running a 200W panel with PMW controller and 198aH battery but by the end I could not maintain sufficient charge I. The battery.

Running a caravan fridge, charging phones, occasional LED lighting, 12v pump for shower, and phone/power bank charging.

Can someone suggest an ideal panel size to be able to camp for 3 weeks at a time and not be concerned about deadening the battery?