It's a very slow starter, the first 2-3 seasons are basically just setting up the backstory for the character to give some context to his "fall" From Jimmy McGill to Saul Goodman. We almost gave up after season 2 as well, but it picks up a bit after that, definitely worth sticking with.
Hoping for a swift recovery (partially for selfish reasons, looking forward to the final season of BCS!)
