Please do not sleep train your baby. Infants need to have their cries answered its how they learn to trust people and to have healthy emotional attachments. They do not yet need to sooth themselves asleep, you have many years to teach them that and I promise they will learn to sooth themselves eventually. Usually this happens naturally during toddlerhood in a gradual way.
Follow your instincts and pick that baby up. Love, cherish and nurture them that is what they eed.