How are you mamas bathing

Your LO’s? We’ve been using this one since she was born (May 28th) but I just realized TODAY that the weight limit on the insert is 10lbs. She was 9lbs 3oz at birth 😱 at her 2 month, she was 12lbs. I will find out how much she weighs on Friday at her 4 month appointment. My husband and I are looking into buying another one for now but struggling to find something because she’s not sitting up on her own yet. Any suggestions on what to do for this in between stage? As far as baths?