If you dont remove it by hand it will keep stretching thinking its still underground. Next time leave them in paper towels until the shell slides off usually around 48-72 hrs then plant
Mist it with water. The shell will soften up and falls off. I wouldn't go to yanking on the sprout. Keep it moist and it'll come off naturally.
Im using jiffy seed starting mix. It says its a dry mix. I've just been sprinkling small amounts of water around the plants a couple of times per day. Should I completely soak the mix or just keep watering in small amounts as normal?
On a drenched pot, soil. It won't need water for another 7-10 days. It'll be three to four times it's size before it needs to be watered. Then it's a light water.
Example, Two gallon pot should need about 4-6 cups water per pot. Don't drench to runoff until the plant can handle it. That's around 4 weeks old. You should only be watering in veg around 4-5 times. Sprout to 12" tall. 5 times...
So just continue with the dry soil and keep adding small amounts of water around the seedling until it gets bigger?