Advice baby still wakes up for feeds

Am I doing somthing wrong ? My baby is nearly 6 months and still wakes up for nite feeds I've been reading up and it says baby should be sleeping 8 hours a nite she sleeps for around 5 and then wakes for a bottle I'm starting her on solids in the next few weeks I have been giving her bits of baby food etc but I'm just scared incase I'm not feeding her enough any advice would be appreciated thanks