HElP!! HELP!! HELP!! I need to know if I messed up! Comments that are beneficial and non judgmental…

HElP!! HELP!! HELP!!

I need to know if I messed up! Comments that are beneficial and non judgmental are welcomed.

FYI: my nephew is all over my SIL (who bf) on Sunday’s because he knows she leaves for work the next day; also we have a camera in the living room just in case of any intruders (you know the age we live in)

So I watch my sister in laws son, who’s a month old today. And I have my 3 mos old daughter with me as well. I hear him stirring sound 9, so I go check on him and put a binky in his mouth, and he’s not having it, so he’s hungry,

Around 9:06 I am making his bottle, and he’s crying (mind you she has told me if he cries to let him cry; and if I try to comfort him and I don’t have a bottle, he cries even harder) while the bottle is heating up and he’s crying, I go check on my daughter who’s already whining that she is alone.

Around 9:10 I go pick her up and take her to the kitchen to go and grab his bottle, and it’s perfectly warm. I go set my daughter down in her bouncy chair.

Around 9:14 In the middle of changing his diaper and my SIL calls me and asks me what’s wrong with him? I told her he’s hungry but I’m about to feed him rn. Ok, end of convo right. I feed him, burp him, and I lay him down and he’s fast asleep.

9:41 my SIL calls me to tell me that she saw me on our video camera, that it looked he was crying for 30 mins, and I didn’t go to comfort him. I told her that I can’t comfort him while I’m making his bottle because he cries even worse because I don’t have his bottle ready, so I rather have his bottle ready, change his diaper, and then feed him so he’s not crying so much more than he should. I’m not bf so i can’t just feed him the moment he starts crying. She said she understands but it’s a little harder because it’s Monday.

My question here is: am I in the wrong? How can I better this situation?