Do you have any blog post, video or anything that shows how to build your project?
except for the wemos lolin c3 pico, very tiny esp
In hibernation with only the RTC clock running I believe it only consumes 0.008mA which is coin cell worthy with a < 1% duty cycle. With the wemos boards my lowest is around 3-4mA which is still fine but considering price is the same I would recommend the firebeetle ones.