Taking Cara babies

Anyone use this and it worked? LO is approaching a year and I had thought that by now we’d be far into him sleeping on his own in a crib. Nope!! He’s still waking up every 2-3 hours. We’ve tried lots of different types of sleep training and nothing has worked. We know as he gets older and used to us being around at night it’s only going to get harder to get him to sleep in his crib alone. My husband and I talked about how we may just finally be desperate enough to drop the big bucks but only if it’s really going to help. So I wanted to some here and ask and possibly hear some success stories? My husband and I haven’t slept in the same bed at the same time since he’s been born and we’ve decided this is enough 😭 Thank you in advance!