I normally try some or use the tommee tippee colour changing spoons if I don’t want to try it 🤣
I have always done the same as you and his almost 18 months now
I do the same thing as you do..
I do that and my girls 3 in March. She’s also learning to do the same. To blow it a bit and then gently touch it on your mouth to test how hot it is
You could get a food thermometer Or you can buy spoons that change colour when the food is too hot. We have ones from Tommee Tippee I think