Big baby bouncer

Our baby boy has recently turned 4 months. He is reaching 13kg, which means our current Babybjon bouncer will soon be unsuitable for us. Even now, on the highest level, the back of the bouncer is almost touching the floor. The bouncer is our main seating kind of situation for baby, and I am struggling to find something else that’s similar and could accommodate a larger baby. Most swings/bouncers I’ve seen go up to 13kg. Is the bouncer period over for us? Do you have any recommendations for suitable swings/bouncers? Ps. He cannot yet sit unaided. He has been attempting to “sit up” whilst in his bouncer. We do have a sit me up for play time, but I feel like he’s too young to be using that as “main seating” .