so I want to try the cry-it-out method since I have done everything else but my only problem is I…

so I want to try the cry-it-out method since I have done everything else but my only problem is I can't get my son to eat much before bed maybe about an ounce or two of milk and he's 8 months so he still just wakes up constantly to eat but he falls asleep eating instead of on his own.. how can I get him to drink more before bed cause he doesn't really eat dinner much either.