You need to sort out the terminology and sort out how to measure. Without decent measurements you can’t accurately determine progress. BPEL is the standard measurement, pushing in to the pubic bone. We use this to prevent a month of pizza’s producing a perceived loss in gains, it’s a more stable measurement. Check the Penis Enlargement FAQ for all the terminology.
0.4” in length and 0.35” girth is good in 1.5 months. You could change your routine and stop gaining at that rate or even altogether. But if you are convinced your gains are slowing, then try to ramp up the stretches with some more intense variants and start throwing in more advanced girth excercises with the jelqing (be careful with these). If you gradually ramp up the routine and constantly monitor your progress, you should be on to a good thing.
furryone,
This is a penis enlargement site. Certainly my first thoughts on seeing that PE might be possible was “why not”.