Am I doin it wrong?

I switched from j’s to vaping dry herb with a Roffu since 3 days. I find im clearing my throat an aweful lot and back if throat feels dry. I usually vape starting around 180- finish at 220. I find myself havin to do quite forceful long lung hits to get vapor clouds, like a bong but less airflow . I find it kinda Exhausting compared to joints. Perhaps these hits are sending too much air to the back if my throat and thats why it feels dry?

Any how … please advise this noob😇