This advice seems to apply to cases where the 2 TCs are far apart, each with its own forage and its 8-sheep group etc. I wonder what happens if, like on some maps, they are close together, meaning one base with one forage, 8 sheep total etc.
More details would be desired for both cases.
Some things i have seen people fail on double maps is the very very start, your first priority is to keep both tcs pumping non stop, and only after that start taking some wood, if there is a close boar take it fast, also sometimes it's better to mill before LC(not in water maps of course), being a couple of vills ahead that early is a big advantage