Why

Fewer than 10 inquiries/month is roughly two a week. You can hold that in your head, but you're not — because they're scattered across WhatsApp, Email, and Instagram DM, and nothing tells you which ones you haven't replied to. That's not a CRM problem; that's a "no single place to look" problem. Any CRM you sign up for will become the fourth tab you forget to check.

What you actually need

1. A Google Sheet (free) — one tab, columns: Date / Name / Channel / What they want / Last contact / Next step. One row per inquiry, all three channels feed into it.
2. WhatsApp Business labels + Instagram "Requests" folder discipline — install WhatsApp Business (free), create labels "New", "Replied", "Closed". For Instagram, check Requests daily — that's where DMs from non-followers hide.
3. A habit — the 9am sweep — every morning before anything else, open WhatsApp, Email, and Instagram DM in order. Any inquiry untouched for >24h gets a reply or a row in the sheet. Five minutes.

Do this today

Open Google Sheets, create a new sheet called "Inquiries 2025", and add these column headers in row 1: Date, Name, Channel, What they want, Last contact, Next step. Bookmark it in your browser toolbar. Then go through the last 7 days of WhatsApp, Email, and Instagram DM and paste in every inquiry you find — you'll likely discover one or two you forgot to reply to, which is exactly the point.

What to ignore

Whoever pitched you HubSpot, Pipedrive, or Zoho Bigin at this volume is wrong — you'd spend more time configuring fields than handling actual inquiries. Skip every "CRM for solopreneurs" ad you see on Instagram for the next six months. At <10/mo solo, software adds friction, not leverage.

What doing nothing costs you

With under 10 inquiries/month you can't afford to lose even one — at this volume each missed reply is 10%+ of your month. The compounding cost isn't revenue, it's the reputation hit of being the business that "never got back to me."

When to revisit this

When you cross 30 inquiries/month, or the day you bring on a second person who also needs to reply to customers.