"It gets me when newborns arrive the amount of people who think it's ok to just focus on the baby and sod the other kids-it isn't ok. We'd all love to spend hours snuggling newborns but you don't cease to be a mother to older children. All children need and are entitled to their mothers just as much."
It's not impossible to give time to your children and your newborn at the same time, you know!
OP - you can try to get your baby to fit a GF routine, but if he/she doesn't want to, then you will have a choice about whether you abandon it, or you put up with a crying baby (which is not good for you or the baby).
Also, if you want to bfeed, then you'll be lucky if you succeed if you're following GF.
I would recommend feeding your baby as often as you are able to, which will hopefully be at least as often as your baby needs, if not more often. Do it whenever you can, then stick the baby in a sling and get on with your other things - housework, playing with children, school runs.
Somehow I've managed without Gina and I've had four children without neglecting any of them.
Sad that people who do use her book to the letter thank Gina for sorting it out for them. You know when it doesn't work, mothers blame themselves, rather than Gina. That's what's wrong with prescriptive rubbish like her books; leave aside the fact she hasn't even had children herself!