Often this can be about trial and error, but if you are regularly seeing differences in humidity, I highly recommend seeking the advice of the tobacconist you purchased your humidor and accessories from
Maintain a consistent temperature of 70-75F (21-24C) and keep the soil consistently moist but not waterlogged
Toxicol Mech Methods 26:443454 Luedicke F, Picavet P, Baker G, Haziza C, Poux V, Lama N, Weitkunat R (2018) Effects of switching to the menthol tobacco heating system 2.2, smoking abstinence or continuing cigarettes on biomarkers of exposure: a randomized controlled, open-label, multicentre study in sequential confinement and ambulatory settings (Part 1)
PMID 6862475
It's cheap, so I'd consider a FB, but I get so many compliments on another cheapie--Mancera's Red Tobacco--that lasts forever, projects monstrously, and whose sillage can be detected for miles--that why bother