I woke up this morning with my 11 week old face down in her bassinet she is not yet rolling from back to belly and is still being swaddled should I stop this ?

Here is Red Nose information about when a baby is rolling.
https://rednose.org.au/article/what-do-we-do-now-that-a-baby-has-started-to-roll-over

Most babies will be rolling over by 4- 5 months. Some earlier, some later.
This is very normal as babies grow & become stronger.
Many babies then prefer to sleep on their side or tummy.
This is not something that needs to be stopped. It is important to make the “new” environment as safe as possible.

I think you need to manage this as if she is rolling.
Cease swaddling & move her from bassinet to her cot.
Babies needs arms free & the space of a cot to roll.
Bassinets do not provide enough space for rolling well.

How does she go with tummy time when awake?
Is she holding his head up &/or reaching for toys?
Have you tried to roll her back when you see her on her tummy?
What doe she do?