When feeding my 1 month falls a sleep.?

He may wake up because he didnt get full from the feeding because he fell asleep. Try stroking his cheek, undress him, lets see what else did i try? take his socks off and tickle his feet. If he pauses between sucks for more than 7 seconds, tickle him or do whatever to stimulate him again. Thats what the lactation specialist told me. To not let her go longer than 7 seconds without sucking cause they fall asleep. Is he swaddled???