I think you should take photos of yourself every 30 days. I do, and usually I don't think there's any difference, but there actually is when I compare the photos. Measuring yourself with a cloth ruler and keeping a log is also helpful. If it wasn't for my log and photos, I probably wouldn't notice the differences I've had.
Increasing your caloric intake might be helpful, I am going to be doing a weightlifting program in 2 weeks, and I am 5'2", 120 pounds, pre-T need to eat close to 3,000 calories/exercise day according to the calculator the program has (haha which isn't going to happen, I barely eat 1,500 as it is). Just make sure you stick to lean foods if you up your intake.