Dear fellow traveler, hope this will help you. Day 1: Delhi - Haridwar (220 kms, 5-6 hrs drive)
Day 2: Haridwar – Joshimath (280 km, 8-9 hours' drive)
Day 3: Joshimath – Auli (8km, 30 Minutes' drive)
Day 4: Auli Tour
Day 5: Drive Auli to Rishikesh (254 km, 7-8 hours' drive)
Day 6: Drive Rishikesh to Delhi for departure (230 km, 5-6 hours' drive)
Please follow the link below for details.
https://www.indianholiday.com/tours-of-india/auli-tour-package-delhi.html
Dear fellow traveler, yes that's too much driving. Roads in good condition if you are not traveling in monsoon this area is prone to landslides in monsoon. I advice you not to self drive even if you are 100% familiar with driving in mountainous terrain. You can hire a guide or a driver that would be