Are you starting in the morning, you could start with porrige, then soup for lunch and a shake for tea, makesure you have plenty of water, be prepared you may hate some of the flavours, but i do think its important to try them out if you think they are vile hold you nose and down them, if you have a couple each of ones you dont like, you cdc should swap them for you so you dont run out.
I only have the choc tetras 3 a day, sounds boring i know but i love them.
Good luck get lost of ealy nights and get plenty on headache pills ready just in case, most people suffer a little the first few days, it soon passed.
Heres to the week ahead with a great first loss.