I bootstrapped a side project into a 5k customer B2C SaaS over the past 3 years. I just finally started getting help with support, and wow -- I wish I had done that sooner.

Instead, I let it build to the point where like 60% of my day (and night) was fielding questions and requests.

Can't recommend enough getting a good system in place for support early, with as many self-serve help resources as possible.