Boleh je, tapi jangan lama-lama lah, baby 3 bulan belum ready untuk duduk properly, urat leher dia masih lemah. A few of us mummy friends selalu guna bouncer atau infant seat kalau nak dudukkan, tapi mostly we just hold them in our arms dengan support betul-betul at the back and neck. Better check with your pediatrician to make sure you're supporting the right spots, especially kat cervical spine area dia, sebab kalau salah support bolehlah jadi issue nanti. Biasanya doc akan show you the proper way to hold and support.