Firstly no parent does things wrong if they give loving care. All babies are different and 21st century parenting makes us feel we need to have all our ducks in a row... it’s a totally impossible task. Just because your baby isn’t following a textbook pattern doesn’t mean a parent is doing something wrong rather, the baby isn’t 100% textbook.
Yes books say babies don’t need feeds at night... yet over 50% of babies still take night feeds up to 12 months old... For many reasons and sometimes it is for emotional comfort. Historically emotional needs haven’t been considered, yet now research is showing that night waking to feed is meeting emotional needs.
Given that when you cutback the volume you get earlier wakings, it’s a pretty good indication that either for nutrition or emotional needs, that time spent feeding is what your baby needs at this point in time.
Could also be a 6month growth spurt. As solids take up more tummy space, for less calories, the solids may actually be part of the hunger too. I know from my own 2 boys eating habits can be different as my second hardly ate an evening meal for the first 5 years of life, while he ate a big breakfast, my eldest was much more even in how he ate.
One thing I know (having teens) is that poor sleeping babies can grow into delightful teens, it’s definitely not going to harm him long term.