Failing as a mom. Night weaning advice needed

I feel like such a freaking failure. My baby is 7 months and still won’t sleep longer than 5 hours. I’ve been trying to reduce the amount of oz he eats during the night feeding but that just seems to make him wake up more. I also stopped feeding him solids too close to bed time which also seems to make it worse. My mother keeps reminding me how she had both her kids sleeping through the night at 3 months so I just feel awful. I don’t want a 1 year old that still gets up. Help