Sleep training tips

My baby is 7 months old and needs to learn to sleep alone. NEEDS to because I also take care of a 2 year old everyday so naps have become impossible.

I can’t hold my baby for every nap and take care of the other little one at the same time. Plus, she gets a shorter nap than she should because she is woken up by the noise from the other little one playing.

Nighttime has become a nightmare. Before I could rock her and then put her down for the night and she would sleep all night and now she wakes up constantly wanting us to hold her.

I’ve tried going in every 5, then 10, then 15 minutes for the past week and it’s not working. It seems like she gets more worked up whenever she sees us come in.

Please any tips or suggestions!!