Transition bed

Hi, I hope you are all doing well! Looking for a recommendation regarding a bed/sleeper for my 4.5 month old baby. He is currently 17 lbs. We currently have the Halo bassinet next to our bed. We started unswaddling our LO (not turning yet) for overnight sleeping. Last night I heard him moving around and saw him lift his legs and one leg was “resting” on the side bar 🤦🏻‍♀️. Ok, we obviously need to find an alternative bed/sleeper before we transition him to his crib (which is in the nursery). Any suggestions/recommendations on what has worked for you mamas? TIA! :)