Getting my new-to-me bugaboo bee next week and didn't know whether to buy a cocoon. Dd is nearly 5 months but small ish. Sits well upright in a buggy tho. They just look so snuggly.... Am I wasting my money? (plus, it's august nearly) what age do they grow out of the cocoon? Also - is a buggysnuggle ok in a bee? Prefer to a cosy toes as can zip off etc. Finally, any recommendations for a buggy liner for the bee (should point out here if I keep spending money like water dh will divorce me).