Routine advice

Lindsey
Hello ladies! So my LO is 2 months old and my doctor is claiming that I should have some type of routine for her since she is sleeping 6-7 hour stretch at night. That I should start seeing patterns of her creating her own routine. However....she is still inconsistent and all over the place during the day. Some days she is awake for an hour and sleeps for an hour and then it's the same thing all day until about 5. Then some days like yesterday she stayed up for 2 hours then ate before her naps then at 5 catnapped until bedtime. Should I start trying to put her into a routine instead of on demand during the day? If so any routines that were successful and didn't drive you or her crazy. Thanks!