We have a 7 week old who has started wriggling their way up in their bassinet - some mornings they have moved from the bottom to the top of their bassinet. They currently sleep with an ergo pouch tog with their arms out. Do you have any additional suggestions that may prevent our baby from wriggling? Thank you!

Many babies do wriggle & squirm & can be quite active.
Its not necessarily about stopping this but ensuring the environment remains safe.
Sometimes it is because they like hands free to touch their face or suck on fingers. However, I see your baby is “arms free” & no longer swaddled or wrapped.

Are you using any bedding (sheets or blankets) in bassinet?
You could try moving your baby to a cot with more space.

Your baby may soon be attempting to roll.
Most babies are rolling from 4-5 mths - some earlier, some later.

How does your baby go with tummy time when awake?