Screaming

Anyone else’s LO exploring their vocalisation? My five and a half month old discovered that he can scream and squeal really loud, and, while my husband and I want to let our son have the freedom to learn and express himself, we don’t want to enable a habit that we’ll have to correct later (learned the hard way already that it’s better up front than later). Please tell me this is just a phase and it’s perfectly normal or maybe advise on a trick to communicate with baby how to use their voice.