I let Andrew set his routine and it worked really well. He settled into it is fast and was a sleep through the night baby by 3 months!!!!
On the other hand, an old friend set the routine for her child and he ws so grumpy. He was a baby that wanted to be feed lots not how much "dad" said he was to get (over controling and a general pain in the a**). If it was 2.45 and his feed was at 3pm she would wait that 15 minutes and he wouls scream and cry until he got is bottle. His mum kept saying to him, you have to wait it's not feeding time yet. It really upset me as he is a baby, he can't get his food like we can. Crying is a signal for food, he should get it when he wants it.
Hopefully you can settle into something with your baby.