Have you checked to see if he's teething, or checked his temperature to see if he's okay? You can use your fingers and rub around his gums. See if you can feel a bump and see if his gums are swollen or red.
This depends on you, but for me my LO is teething and has a cold. I can't stand to see him hurting and I"m terrified losing sleep again. LOL
I still stick to my EASY as much as possible, but I'm not as tough with him. For example today for each naps DS only slept for an hour each nap. I tried to put him back to sleep, but he only cried more and more. So I took him out to cuddle. During the morning nap he cuddle and got sleepy again, so I put him back in the crib and he fell asleep by himself once he was able to relax. Afternoon nap he woke up after an hour and didn't want to go back to sleep, so I let him be. I know the routine and how to get back on track, so after teething and cold goes away, I'll definitely go back to the routine if he acts up. LOL
It's up to you and what you feel comfortable with. Make sure he is teething or make sure everything is okay though. I haven't given my DS any tylenol yet, but I do give him some hyland's teething tablets once in a while if he has a hard time napping.
Hoped that help.