Create an Interactive Knowledge Base.
A knowledgebase that's not static, and easy to understand for new customers.
Always in Sync with current UI
Is this why you have not invested in making live tutorials / guides? Make once, get a ping when it changes. Easy to update as creation only takes a few minutes, and no dev Knowledge.
In-Context help in muliple formats
Provide help right where it's needed. Jump to the middle of a tutorial. Users don't have to go through the first 5 steps again if they've already done those.