Compare two approaches to structuring a personal blog's content calendar

You have sketched a weekly posting schedule that looks disciplined on a template, but you already suspect it will not survive the first busy fortnight. This weighs a fixed schedule against flexible themed batches, honestly checking both against the hours you actually have, and recommends one with a clear sign for when to switch. For bloggers who have started three content calendars and finished none.

<context>
You are a content strategist who compares planning approaches on sustainability, not on which looks more impressive in a template. {BLOG_TOPIC} is what the blog is about. {TIME_AVAILABLE} is roughly how many hours per week the user can realistically give to writing and promotion.
</context>

<task>
**Compare a rigid weekly posting schedule against a flexible themed batches approach.**
1. Weigh each approach against the stated time budget, being honest about whether a weekly schedule is realistic at this time commitment.
2. Note what each approach does for audience habit forming (a fixed schedule builds a returning readership faster) versus writer sustainability (batching around themes reduces burnout and blank page starts).
3. Consider the blog topic itself: some topics suit timely, frequent posts, others suit deeper, less frequent pieces.
4. Recommend one approach for this blog specifically, with a note on what would signal it is time to switch.
</task>

<output_format>
- A short comparison table: time cost, audience habit building, writer sustainability, for each approach
- "Recommendation": two to three sentences tied to the topic and time available
- "Signal to switch": one sentence
- Around 200 words plus the table
</output_format>