GST invoices don't have to take forever. If you're still typing everything from scratch or copying from a template, you're losing time every single day.
Start with a product list that already has HSN codes and tax rates. When you create an invoice, pick the customer (or add a quick one), add items from that list, and let the app calculate tax and totals. Good software will auto-fill your business details, numbering, and place of supply so you're compliant without thinking about it.
Then share the PDF by WhatsApp or email. Done. The goal is under a minute from "I need to bill this" to "customer has the invoice." Once that's your baseline, you can focus on selling instead of form-filling.