Yip its quite normal. Also depends on the wattage you using.
I take it you chain vaping the hell out of the pico. You should be using 6mg nic juice if you trying to quit the cigs.
Maybe post what you vaping? Juice, wattage coil?
Not chain vaping,vaping at 30watts
I'm currently vaping the null lemon cheesecake 2mg nic juice
The coil is the hw2 dual coil 0.3 ohm 30-70w