OT, but I aspire to your level of exercise. And strength.
So it sounds like you've hit a plateau, to which the answer always seems to be "shake it up." You might be overtraining - are you taking a day off a week? I've also heard that you should take a full week off every year, just to let your body do whatever it thinks it wants to do. Another thing to try is to start mixing up how many calories a day you're eating. Interspersing some days with 2000, 2200 calories can kick your metabolism back into gear.
The other usual advice is to increase the intensity of workouts, because even with a solid combination, the body can get used to anything, really, after 6 weeks or so. My gut says that's probably not the issue, so I'd try the other two first.
And the standard disclaimer: I have no idea what post-cancer means for the body, anything your doctor might say (and checking in is always encouraged) trumps whatever us random folk might come up with!
| current weight: 190.0