All babies are different, just as all adults are - you wouldn't expect everyone you know to eat and sleep at the same time, so why people expect Gina Ford to work with every single baby just baffles me ..
Ime, the people who claim Gina worked for them are probably the people whose babies would naturally have fallen into that routine anyway, but they let someone who's never met their baby take all the credit!
I work with parents and see so much stress and anxiety caused by parents trying to shoehorn their individual baby into a one-size-fits-all approach. For some babies it's never going to work and you'll be constantly fighting against your baby which is a recipe for all-round misery.
The advice a previous poster gave about letting your toddler's routine set the pace makes a lot of sense. You don't need to be watching the clock, watch your children instead as a baby can't tell the time, they just work on tummy-time.
If you want to use an evidence-based approach, try Baby Sense by Megan Faure (
http://www.amazon.co.uk/Babysense-Secre ... 704&sr=8-1).
Good luck - and look after yourself as well - this stage is hard enough without giving yourself added sources of stress