Haven't read everyone's responses but just wanted to give you
Do NOT stress about routine and habits at a month old! I did too, and I know when I have my next baby I will be so much more relaxed. I also fed my son to sleep every sleep for a few months, and when he was ready to go to sleep by himself he did! It was no problem getting out of that 'habit'. We also had a phase where he slept in the moby wrap every afternoon, again - when he was ready to sleep better in his bed he did. Whatever gets them to sleep when they are tiny is a good thing.
Take it easy, be kind to yourself I'm sure you're doing a wonderful job