overtired 4 month wants to sleep in my arms

the title really sums up this post.... we don't co sleep due to the fact that we both move a lot in our small queen size bed and we don't allow DS to cry it out. does any one have suggestions on getting a 4 month in the peek of sleep regression to sleep? he's only been sleeping 12 maybe 13 hours some days a week and those following he zonks out for 15-16... also, how does Mommy go from being sleep and food parent to daddy becoming the parent to put him to sleep? I'm beyond my limit of sanity and need a physical, mental, emotional and spiritual break!