Screeching

Morning! Just after some reassurance really, my son is 6 months old and over the past 3-4 weeks has started screeching and yelling (sometimes a lot 🥲) sometimes he seems quite annoyed when he’s doing it, like when I’m trying to get ready and he wants my attention, sometimes he screeches and then smiles and giggles afterwards. Is this like a normal developmental thing or am I missing something/getting something wrong?