My baby always rolls on to her side for sleep. I always place her on her back, but she rolls herself to her side. I often re position her, though she always finds her way back to her side. She is just about to start rolling from back to tummy as well. What can I do to make her as safe as possible with side sleeping?

Most babies will be rolling over by 4- 5 months.
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.
https://rednose.org.au/article/what-do-we-do-now-that-a-baby-has-started-to-roll-over

How old is your baby?

Is she now in a cot (not bassinet) & no longer swaddled?
Babies need arms free & the space of a cot to roll well.
Ensure the mattress in the cot is firm & there is nothing loose or soft in the cot.
Still always place her on her back for sleep.

How does she go with tummy time when awake? Is she holding her head up & starting to reach for toys?

Let me know your responses so I can reply more specifically?