I am losing my mind. LO2 takes 20-30 minutes of rocking to go to sleep, naps and nighttime. I miss putting LO1 to bed because i am stuck rocking LO2 to bed. For nap time, LO1 can only keep herself entertained for about 10 minutes, then will come and find me trying to put LO2 down and in the process will accidentally wake her up and we start all over. I cannot keep doing this. How young is too young for sleep training?