Has anyone tried the Konny swaddle? Need reviews..

Great for first 3 mths, bb falls aslp instantly once you get the hand of wearing it and putting bb in and adjusting to correct bb posture and lightweight. Swap to ergo at 3rd mth becoz bb getting heavier and i need better support.

i think best for babies up to 6 mths..after that baby put on more weight, gives me backache. rather use ergo or tula