I don’t think that the purpose of placing an IC in India is to hold India. It deters Japan from walking straight into Russia an dallows the allies much more time to get into Europe. Also with India only having a value of three I don’t feel like the IPC drain is a huge commitment. Also when you couple this with a IC by the US in China you turn Asia into a back and forth contest between for those middle terrorities similar to how Russia and Germany treat Eastern Europe.
As the UK in this strategy I usually build a sizable air force to keep Germany from amassing a navy, which with help from the U.S. this is not a problem. That frees me up to put a combination of units in India and to attempt a pipeline of units into Archangel. I feel like the goal with the India IC on UK1 is to stall Japan and harass them when you can. This leaves Russia to devote a much larger force to Germany and with a little luck I have been able to to attack Japan with Russia as well.