Toddler bed

Switched my daughter to a toddler bed. So far she does good going to sleep but she wakes up in the middle of the night around 12 and gets out of bed. It’s been happening for a few days. I spent 2 hrs putting her back in bed again and again and again. I’m not sure if there’s a better option of putting a gate in her door so she just has to stay in her room or should I continue this hoping she eventually stays in bed and falls back asleep.

Wondering if anyone else has made the switch and has any tips? We are due with #2 on February 3 and moving her room so we made the switch to a “big girl” bed.