Can’t leave the room while baby sleeps

Just 10 days ago, I started sleep training my boy who is exactly the same. He’s 18 weeks old. And this past week I’ve seen huge change! I’ve not quite got him in his crib, but he’s sleeping through the night without being Velcro’d to me. I’m using huckleberry and it’s been amazing. Anddd we’ve made progress whilst we’ve all had a horrendous cold!

I've had phases of this with both my boys, and seems like its just starting to improve again with my second. Have you experimented with waiting different amounts of time to roll away? I have found I need to wait until my baby is in a deep sleep. Have also read that almost half waking and resettling baby as they would come to the end of one sleep cycle and start the next can help (if that makes any sense?). I think this is likely the stage where baby is adjusting to new shorter sleep cycles and cant yet link them together, but may continue sleeping when you are there or having a contact nap, but will wake up after a sleep cycle which can be as short as 20 mins if you are no longer cuddled up.