So my baby is almost 7 months, has never had a bottle and our bedtime routine is basically him…

So my baby is almost 7 months, has never had a bottle and our bedtime routine is basically him nursing until he k drowsy enough to unlatch then I put him in his crib... Anywho.... I know it's awhile out but I have a concert in August that starts at 7 and my baby usually doesn't go to sleep until 815 and it's an hour away so basically I have to have someone else put him to bed 😩 any suggestions? He will be 9 months by then so who knows but so far I've been the only one to put him to sleep. It's months away and I'm already anxious!