Dosed Methadone for first time about 4 hours. Total dose 15mg. Can definitely feel it, but only very subtly. I take Ambien CR 12.5mg everynight (I have a high tolerance so I usually take 2-3 of them and chew them up rather than taking them whole). Question is, is it safe for me to take just 1 Ambien CR tonight after dosing the Methadone?