Sleep Training😴 advice for a 7 month old

Sa

My baby is 7 months old now and I would like to start sleep training her. She sleeps okay but she keeps crying in her dream. When I wake her up she smiles 🤪. Does anyone have this experience. I would like to move her to crib in her own room. But really worried. Please send me all the tips and advice on sleep training. Thanks in advance