What tank are you using.. And at what watt are you vaping at? May need to turn down a Lil and make sure the coil is primed well.....also if you vape a dark juices they tend to gunk up coils pretty fast just a thought....
But if you are getting burnt hits the coil is done and needs to be changed.......if you are using a good tank your coil should last more than 5 days as long as you don'thave the watts up to high .but i don't know about how long a jomo coil should last. Hope this helps,don't give up on vaping!