3 year old having problems adapting after a new baby

peter

our baby is 2 weeks old now, and the older 3 year old sister has problems adapting. she loves the little one but fells left out on occasions.

we were cosleeping before, but she figured out on her own this won’t work anymore and now sleeps in her own room.

she has tantrums kicking and screening and once almost kicked the baby (by accident she was kicking all around).

she woke up in the middle of the night and come to our room. but got triggered by something. (anything that’s not exactly what she wants will trigger her when she tired)

not sure how to handle this. it looks like it’s a combination of her being 3 and looking for boundaries and the new baby.

we do give her lots of attention.