I am going IN to PT as a second career at 33 (37 by the time I am done *if* I can make it in to a program on my first go round).....
Something relevant that I learned from another degree and various life experiences... In anything you pursue at a high level regarding the accumulation information, you will come across details that seem vague, maybe unnecessarily specific, maybe some things even feel completely off topic... But with time and experience in any practice you will find yourself occasionally recalling some of those "unimportant" details, and sometimes they may even be a life saver.
Something else to consider when feeling generally burnt out and stressed... Sleep patterns? Diet patterns? Exercise? Getting out to just exist in the world at least every once in a while? Is it the program or something else that is a distraction? Is there maybe even an underlying clinical diagnosis (low T, manic depressive, etc) that may be at play? (these are of course rhetorical questions)
You got the spot that a lot of us out here in the world want, and sounds like you are just about half way. HALF WAY through a DPT program, in terms of life a year and half is nothing. Find some time to be alone from the world and do some self reflecting, find your peace, and push through.
You may love PT but hate learning about it. Hell, I LOVE playing weird jazz/neo soul pieces on the piano, but sitting down and plugging away at the theory makes me want to puke.
Good luck!