Use your departure city, not a single Australian clock
Australia has several time zones, and the difference relevant to your trip depends on the city and date. Copy the local times from each booking into one itinerary instead of remembering a single offset. If you need a domestic flight before the international journey, include that connection, its baggage rules and any overnight stay. Tell the Indian pickup operator the flight number and arrival date rather than giving only the time you leave Australia.
Match the Indian region to your travel window
School holidays or annual leave may determine when you can travel, but they do not determine suitable conditions in every Indian destination. A northern city, a Himalayan foothill stay and a southern itinerary can raise different planning questions. Pick the region and specific activities, then check current seasonal and local information. Avoid copying a packing list simply because it suited the same month on a previous holiday. The desired activity should shape the route as much as the available dates.
Give the long trip enough local time
After arranging the international flights, compare how many days remain for visiting rather than transferring. If Rishikesh is your focus, choose an accommodation location that supports the class or ashram you intend to visit. If heritage cities interest you more, build around a manageable cluster. For a family or mixed group, ask what each person regards as a good ordinary day. That helps you spot a route that looks impressive but gives nobody enough of what they wanted.
Check the complete cost and the journey home
Keep the budget in Australian dollars and Indian rupees and write down which currency each supplier will charge. Compare accommodation, private transport and activities by their full inclusions and cancellation terms. Read current Smartraveller advice and use Indian official sources for entry questions specific to your passport and purpose. Learn simple Hindi for prices, directions and repetition, with written addresses available too. Finish by checking every homeward connection, including the Australian domestic leg, rather than considering the international flight the end of the plan.