need some advice. baby doesn't want to sleep at night.

My 5wk 4D  baby does great during the day. Doesn't have to constantly be held and sleeps great during day. Feeds every 2-3 hours and sleeps in swing. At night he doesn't want to sleep in swing, bassinet, or crib. Only sleeps decent on my chest. I have to go backto to work in 3 more days. I need him to sleep I've tried gripe water & rice cereal it hasn't helped. Any advice would be appreciated 😳