If all this while she has been able to self soothe then she definitely doesn't need your help to fall back to sleep when she wakes up from one of her sleep cycles. Keep it consistent at all times. Sometimes it only takes one time for you to be inconsistent and your baby will learn very quickly and start developing bad sleep habits.
Try to get her to bed earlier than 8pm as she definitely is overtired if she's waking up multiple times at night.
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Singapore's baby and child sleep expert