Wait it out a bit? When the lower activity phase kicks in you can start looking for another job: you say it is a well established startup (so you having it in t

Wait it out a bit? When the lower activity phase kicks in you can start looking for another job: you say it is a well established startup (so you having it in the cv won’t hurt) and also that you are learning stuff. So if I can keep up with the current work rythm keep on, then move on. (Also, why do you think slowing down a bit will be a problem for you?)