Please help 😩
2y/o DD (almost 3y/o now) has this extremely frustrating habit of randomly shouting when 5 m/o DS is either falling asleep or is asleep. It's driving me insane! He's still little so he needs multiple naps a day and she does this every time. It makes things SO stressful!! Usually, I can eventually get him to sleep but she's trying to interrupt throughout so every shout could be the one that ruins his nap.
I've tried giving her her favourite quiet activities to do during feeds etc when he's going to sleep but it doesn't make a difference. She could be very quiet and engrossed in whatever she's doing when he's not going to sleep. But as soon as he's sleepy, she'll shout out at random moments. She's not shouting words, just 'aaa!'. She's intelligent and does know what she's doing but she's not doing it out of spite. I think she understands she should be quiet but she likes the attention (?) and she feels tempted to do something naughty like this.
Due to the nature of needing quiet, I can't shout or get mad at her during the nap attempts. I keep gently telling her to be quiet because baby brother is sleeping (etc). It seriously tests my patience and at times when he can't sleep because of her, or just because I've snapped, I go and yell at her and she cries. But at the next opportunity, she'll do it all again 🙃
Please write any ideas you have on how to resolve this situation. Thanks in advance 🙏