Are we in the same boat?

I will be 42 in March. I am 5'4" and currently at 177 lbs. My goal range is 135-145. I am learning to run and starting to lift. (I do have to be careful not to aggravate an old back and knee injury, I do have some degeneration between L2-L5) I am also a shift worker in the Emergency Response Field. (2 days, 2 nights then off for 4, 12 hr shifts) If you are in a similar situation and or have had success, friend me!