I would put you nose to the grindstone and forget about gains for now, concentrate solely on getting the most out of each and every workout always increasing intensity progressively. I would also advise to get in as much short stretches as possible, meaning every bathroom break, every time you get any opportunity stretch. You may even want to include
SRT SizeBlasters, they are a length and girth exercise but it will help you grow in ways you are not employing now. Concentrate on work and have a good outlook, gains will come.