17mths toddler keeps waking up at night

My 17months toddler has the same issue, very consistent to wake up every 3 hours to ask for milk at night. Usually I gave her dinner at around 7:15pm, then will try to give her last milk feed before 8pm, then send her to bed at 8:15pm. Some people told me give full feed may make her stomach bloated (then she will feel more hungry as her stomach is enlarged), and some say if no full feed will make her wake up at night.. really confused on what to do to give her the correct routine....Any mommy facing this and can advise on the above? #advicepls #1stimemom #firstbaby