I might lower your nicotine as well. Even if you vape more, that actually will help with the quitting process (seems to me a lot of people chain vape during the quitting process) so I would reduce your nic, so you aren't having unpleasant sensations and call also vape a bit more if you need to. Also, everyone reacts differently to quitting smoking so some of the sensations you are experiencing may be related to that. However, I do think lower nic would help you and the delivery device makes a large difference. I started out DL, and VERY sub0hm like 0.15 resistance and was vaping 12 m.g. of nicotine which was way too much.... In that setup.
I now vape 18 m.g. of nicotine, but in a MTL less wattage delivery system. It made all the difference in the world to me.
Good luck, and I hope things get easier as you continue vaping!
Anna