So is the best way this:
J1 Japan takes the PI & Celebes. IPCs go to 40/41
J2 Japan takes the rest of the DEI. IPCs go to 60/61
J3 Japan takes Singapore. Japans IPCs are up around 67/68
J4 Japan builds a major IC in Singapore.
J5 Japan places 10 infantry in Singapore.
India falls by J7-J9.