Formula kettle question!

[ggggrace]

Hey everyone. Due in 2 weeks. Descaled my formula kettle today (added 4 teaspoons of the descaler, boiled to 100, emptied, now just filling with water and boiling again and assuming that's done?) how often do I need to do this? any advice appreciated! Thank you.

Read the instructions on the descaled. As often as you need to, depends how limescaley it gets

When you start to notice a build up. It varies by how hard the water is in your area, you can usually check this via your water providers website.