Hmmm.. see I never used an app (I think writing things down constantly seems stress inducing), didn't get sore nipples for some reason, and dislike eating in bed!
It really is so personal.
I wanted to co sleep and both my babies breastfed constantly, day and night. It worked well for me and felt v natural.
My sister just had a baby and BFing didn't work for her, and the thought of co-sleeping appalls her. She's happy, baby's happy!
I'd say to trust your instincts, to listen to advice but tomake the decisions that sit right with you. Also, remember that Everything is a phase.
I think we tend to over complicate things and we're biologically primed to be mums, so should go with our feelings. We know our baby best.
All that said, I'm a mum of a girly with severe food allergies who was fobbed off for the 1st year of her life as she developed horrible eczema, reflux and experienced anaphylaxis several times.
So, my advice would be to push back if ever ignored by health care professionals and to treat any eczema early and aggressively (as it is now thought that eczema and a damaged skin barrier causes food allergies in the 1st 6 months of life).