It is never too late to begin your creative journey. Before you dive in, there are many recommendations I have in determining your niche, where and what to create and ultimately aligning it with a personal passion from your own perspective. I expand on all of this in my book, and I recommend you read it before starting.

Audience retention is the most vital analytic for the monetary success of your channel. Although viewership and engagement (likes, comments) aid in the trust of content, ensuring that you are developing content that supports active audience watch time is priority. Purposefully focus energy towards ensuring viewers maintain past the first 30 seconds of a video and adjust decision-making in future assets based on when you notice drop-offs in audience retention. This graph can also inspire future shorts creation and other areas that should be highlighted.

This is where the “Starting With You” framework explained in "Create With Purpose” is so valuable. You will want to ensure that from the start of your creation (or once pivoted in current flow) that your audience clearly understands your reason for creating and that you do not deviate from it. You will want to set clear boundaries for where and how audiences have access to you. Remember that not everything in your life is content nor should it be content. Keep a healthy separation between the works you create (driving from a personal alignment) and personal access by community. It’s ultimately out of respect for both parties.

Quick answer: No.

Many creators want to go “full-time”, but even the terminology around this is often mistaken. Less than 10% of creators can finance their livelihoods solely on content creation, and there is no harm in finding a balanced lifestyle that can support both pursuits.
Until you are already making meaningful base revenue (over the course of at least 3 months) that cover your needs, you should not quit your source of income to pursue content creation.

I expand on this concept here and in my book, but in TL;DR:

Foundation: The core of your show. What is necessary to execute your production?

Additives: What makes your show better? What are the elements that plus it up?

Distractions: What makes your show worse? What pulls you or your audience out of the focus?

I will typically recommend that creators test and iterate upon a concept for a minimum of three months before pivoting in execution. 3 months worth of data will give you reasonable understanding as to whether or not it is appealing to audiences (retention) or whether it is being ingested properly into systems. During each of these months, you should iterate upon the content based on end of month reviews in performance.

It is ultimately worth understanding as well: What is the content’s goal? Is it viewership? Is it conversion? Is it personal exploration or learning? Success can be determined in multiple ways.

Burnout is entirely driven by a misalignment with your purpose as a creator. If you are dreading your next production, stalling in inspiration or generally have a lack of interest in what you are creating - then you likely are having symptoms of burnout. Although density of production or a type of delivery can contribute to feelings of drain, stress, etc, the means to navigate a return to a non-burned out state will require a close analysis and pivot back towards your purpose as a creator (what you actually want and why you are driven to create).