Best advice so far. Buy some hygrometers and do it right. It takes all the guesswork and worrying out of dry/cure. Keep your ambient temps cool in the dry room. 65F is best. With rh50 ambient humidity. after a week of sweating the buds you can smoke one at about rh60 inside the jar. Lower is better and a longer cure is even better still. Some here suggested a very long dry time and that could cause buds to lose too much moisture too quickly. Moisture lost is near impossible to get back. I go by touch and feel of the buds after 4-5 days of drying. But that doesn't mean yours won't be dry sooner. Have a hygrometer/thermometer in the dry room so you don't have to guess. eBay. Look for Cal3 hygrometers. Even the cheap Chinese knockoffs I like. Not as accurate but they are way cheaper and are accurate to within 5 degrees farenheit. If the temps inside the jars are stable for a few days at 60-65 rh then only burp once a week. The longer they stay in that cure zone the better your cure will turn out.
i usually can tell by feel but what does a decent one cost bro?