Sleep help!

Looking for help with sleeping arrangements, recommendations or suggestions to help my little guy sleep in his bassinet. He will sleep in the bassinet for short amounts of time before waking and fussing. He sleeps good in his newborn boppy lounger or if we lay him flat on our bed or on the couch (we do not sleep with him laying on our bed unless he’s on his pillow and elevated). Yes I know people have their own opinions on co-sleeping but after not sleeping for periods of time, I am willing to do anything and the boppy pillow seems like a safe option but not ideal for long term as I don’t want him to sleep in our bed nightly.

How do you get your little one to sleep in the bassinet? Should I put him their and let him cry himself to sleep at 5 weeks?