I did Rupin pass trek in the month of june 2018, I share some trekking tips and my preparation for the rupin pass trek, You will get a lot of help from this
 
TIPS:

• Reduce the bag weight as much u can, 6-5 is recommended. As the bag/dresses get wet in rain, the bag weight increases and it will make your trek more difficult

• Try to reach one day earlier in Dehradun. One day rest before trek always helps to give our body enough rest to prepare for a good trek.

• Trekking Gear: I strongly suggest not to compromise on your trekking gears quality. Just think of a situation, where your shoes is damaged and you are not able walk. You don’t have a good enough jacket to withstand cold and the temperature goes below 5 degree.

• One stick is enough, so that you can give support with another hand while trekking in difficult terrains.

• Poncho experience was horrible. The buttons kept coming off in wind and you have to keep holding the bottom part while trekking difficult terrains. In my opinion rain cot + nag cover would be a better option.

 
Preparation:

• Did jogging 3 to 4 Km  and some exercises like sit up, push up daily

This is a high altitude trek towards the end so plan your physical schedule a month in advance climbing steps; running or other cardio exercise for 30 minutes and strengthening exercise for the legs -3 days a week. AMS can strike anyone so keep drinking water, garlic soup and munching pop corn to remain healthy