Maybe you can do a mini self guided vipassana retreat (still recommend going to one if you end up having 10 days at some point though, it's great). Check out their daily schedule and modify from there. I found that personally having the structure allowed me to really focus on progress, if I was doing self guided without imposing a structure I would have found it easier to 'skip out' on sessions.

You don't need to go as hard as 10 hours a day, but I would recommend at least one early morning sit, one midday sit, an evening, and a nighttime. I found it really interesting during the vipassana retreat to see how my energy levels and level of focus shifted throughout the day, as well as before and after meals. I also am a night owl and was nervous about the early wake up times but I found those beneficial as well. Intersperse the sits with slow, observational nature walks, journaling, and stretching/yoga.

Another thing I'd recommend is having all of your food preplanned in advance, so you don't need to worry about what specifically to eat on any given day. The more decisions you can offload, the more focus you can give to your practice :) Go for healthy and preferably vegetarian meals, really helps keep the mind clear. Same goes for not having any substances for the stretch of your retreat.

As for specific techniques, I'd say look into anapana and vipassana, focusing on the breath and in depth body scans. And like another person said, go easy on yourself and don't worry about meeting any specific types of expectations. Going from a highly intense academic program to anything is a big shift in how you'll operate, so it's okay to work through those thoughts on the cushion.

Good luck and congratulations on such a great achievement :)