My 8 week old has just started to move towards one side of the bassinet while sleeping, so that he ends up in a more diagonal position. His face is getting close to the mesh sides, and from reading previous questions here, it appears that moving to a cot (unswaddled) is recommended. His cot won’t fit in our room, would a compact cot be safe or would he need the full size cot for safe movement? He is a large baby (97th percentile) and is likely to outgrow bassinet soon regardless. Thank you

Some babies do not respond well to swaddling & some like their arms free to touch their face or suck on fingers.
Many of these babies will wriggle & squirm in an attempt to get arms free.

You can try wrapping him with arms out , or you could cease wrapping altogether, if arms free only doesn’t seem to keep baby more settled.
https://rednose.org.au/article/wrapping-babies

It is ok to use a compact cot, as long as it meets Mandatory Australian Standards. (AS/NZS:2172)
https://rednose.org.au/article/what-is-a-safe-cot

How does he go with tummy time when awake?
https://rednose.org.au/downloads/RN0407_22_Tummy-Time.pdf

Always continue to place baby on back for sleep.