Be in this for the long haul. Effortlessly losing 1-2 lbs per week while slowly developing better habits is far more meaningful than starving yourself for a month to get immediate but short-lived results. Get an accurate bathroom scale, take daily measurements first thing in the morning, calculate key milestones, and put it all in a spreadsheet to keep yourself honest and motivated. It will probably take 6-9 months to get the outcome you want; daily or weekly weight fluctuations are almost completely meaningless, but you should be seeing a consistent and predictable biweekly drop.
Your emergency medicine book will go into more details about setting bones, applying splints, or even doing field amputations with a knife and a saw. But even just to deal with a sprained ankle, a folding cane ($14) may be good to have somewhere in your stash. Beyond that, bandages are useful for improvising splints; in areas where improvisation may be difficult - say, in the desert or up in the mountains - portable folding splints ($10) can be handy, too.
TREE SACKS ARE LIGHT WEIGHT, EASILY PACKED, AND PROVIDE COMFORT WHEREVER YOU ARE! The Tree Sack is just 15.75 oz. with lots of room for a single at 9ft long by 4½ ft wide. The Tree Sack Double is just 25 oz. and has all the space you need being 10ft long by 6½ ft wide. The Tree Sack holding bag allows you to stuff the entire hammock, straps, and carabiner into one small unit. This makes carrying or packing the Tree Sack in your backpack a breeze!