Hello everyone! Could you please tell me what I can give my almost 5-m…

Hello everyone! Could you please tell me what I can give my almost 5-month-old baby to calm him down? I used to give him breast milk, but now I've switched to formula and need to wait at least 3 hours before the next feeding. He cries inconsolably while trying to sleep, so what else can I give besides formula? Water is not an option. * Rocking doesn't help either and anything other than giving him a bottle is out of the question.