Hi dear, that’s the only way your baby knows how to communicate for now :) whether hungry/in discomfort/has a wet diaper, he can only cry to tell you. Sometimes he also wakes up and finds that you’re not there, so he’s very scared. Give him some time... by 3 months+, he’ll learn other forms of communication (cooing, fussing, whining..lol), and won’t always wake up crying:) you can also start training your little to self soothe at that age by not responding to baby immediately but waiting for a few minutes.