You have 100 days in your hand. Give 10 hrs for self study each and every day. Revise stuffs after every 2–3 days. Give atleast 2–3 mocks in a week. Analyse thoroughly. Note down your areas of strength and weakness. Also 10 hours mean “Raw 10 hours”. You need to have a timer set and then you should count your hours.
In the end you would have done 1000 hrs of self study. That's more than enough to get you through advanced. Though decent ranking and dream colleges may still be a distant affair but it's better to take a chance and miss without aiming at all.
Hope it helps.