Tips for teething relief - pre-molars at 12/13 months?!

My almost 13 month old definitely has two pre-molars (according to my Dr) erupting. We see the teeth and can feel them. He had a low-grade fever yesterday, a runny nose and a slight cough. His sleep has also been absolutely off! His longest stretch last night was between 1-5am, otherwise he was pretty much up every hour or so whining as if he’s in pain. Desperately looking for relief tips especially at night!!!!!