Easiest way to spend 500-600 energy points without refreshes

As a free to play gamer with limited crystal income I try to avoid spending my valuable resources unless I absolutely have to. My guild is pretty laid back and only requires a minimum of 500 points earned per member a day which is easily doable for me. My work schedule sadly has me working evening shifts so I tend to miss out on extra energy points at 6pm unless I turn on my data long enough to grab them and shut down. I sign in regularly to spend whatever energy I have at the moment and make it to the 500 mark before work and save whatever I have left to spend after my shift ends which goes towards the following day's required 500 points spent. But as of lately it seems like I'm barely breaking even being short like 20 or so points to make 500 and I've been following the same routine daily. Are there any tips on what I could do to improve my energy spent points without the need to refresh or do I need to just use crystals to break even?