if you can, consolidate the british fleet in the pacific, it’ll probably have most of its ships sunk, unless japan opts to use its forces for something else. use this fleet to harass his islands or around india. that will force him to build boats and come after you.
america can put token forces: maybe an ac with two figs on it, a sub or two, and a trans or two, and also start to harass japan. this will make japan split its navy, or take the time to move against the brits/americans fleet and then the other allies fleet next, which will be far away and take time. all the while you can hopefully use your other allied fleet not being targeted to try and take an island or two or threaten kwan, fr.indo, or india and that makes japan leave forces behind, rather than them being shipped to the russian front. its hard work.
as aj said, you’ll get the hang of it. or perhaps you’ll get lucky dice in a naval battle, and stick that in japans face. those dinks will be pissed! :wink: