790 Ketosis!!!!!! please help

DH started the 790 plan on monday just wondering how long he might take to get into ketosis if at all has anyone been on the 790 and in ketosis... he keeps complaining all the time that he's hungry!!!!! I need to know when it'll stop i went into ketosis about day 3 i think, but he's on day 3 and not got there yet!!!!
PLEASE HELP!!!!!!!!

Thanks dancing he's like a baby some times lol

not bless him lol kill him!!!!! lmao