Is it ok to skip naps sometimes?

My almost 2 year old will some days not nap at all and his bedtime sleep doesn’t seem to be affected. Some days he naps for a long time though. I have a hard time figuring out when he’s tired because he doesn’t act like it. I have figured out it’s when he starts acting really crazy and wild but at that point I feel like I’m to late and missed the signs.

He woke up at 5:30 am today and hasn’t even had a nap and it’s 1pm now. I tired to put him down t times and he was just to crazy. I’m frustrated cause I enjoy my free time when he naps.