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Kaedok posted on r/beginnerwoodworking2w
Grab a cheap moisture meter from amazon, I use this one: https://www.amazon.com/Wood-Moisture-Meter-Firewood-Professional/dp/B0967ZP5B1/ref=sr_1_1_sspa?dib=eyJ2IjoiMSJ9.EiPk0XzopcnYsfufkxW3sKil57VKtv_rSTKQHnZvFcfJGArrNQ6NfikMMq_XAbLTvpyJtykRSj8-zM168prrS9OpzHnjE590a5ereUqF07nQtihigpv39uIMnEZrFFstMeROyL8hcumLdYLid-uq07IVUCiGbXgpw9LSKIGWmbYpbdE8XefQ9REGVznvs1mHHDrXs5bozAFuwYkhmTuPJFu_xFZO-zeKiRQVYRxYPhsHAV470GbL8ExkDllTULz3O_K6cpFFEMMFo31eAibGxZcjtXOCAv4WWnD6cO4zT7U.uYITv3yqyITkCfU0LmmXprVrLtYMnvXNiZrFhh-T8Yc&dib_tag=se&keywords=wood+moisture+meter&qid=1781091619&sr=8-1-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1 Stack it somewhere dry with good airflow until it reads dry, then flatten with a router sled and surfacing bit