Bed Rail for Toddlers,71in Foldable Bed Rail for Baby, Baby Bed Rail Guard with Reinforced Carbon Steel Frame&Connectors for Twin Full Queen King Bed

Oh ok gotcha. I think he would get trapped on those. What i did for my daughter when we finally moved her into her own bed at 18 months was this - we got her a daybed and this guard the day bed was a lucky find on fb. But I think 12 weeks might be too little for this setup