My little one is almost 7 weeks already. 😭😭

I want to start putting her on a sleep/nap routine before I go back to work when she is 12 weeks. I get home from work at 6 pm so I would like her bedtime to be around 8 so I can have some time with her. What type of sleep/nap schedule do you think I should start doing? How do you recommend putting her to sleep/nap at night and during the day? She is a very light sleeper btw. Currently I try to have a consistent bedtime, but it’s not really working. We start getting ready for bed around 8 pm and she’s usually put by 11 pm 😩. We usually start the day around 10-11 am. Naps during the day are not consistent at all. I sort of just feed her on demand and let her sleep when she wants. It hard because she doesn’t sleep anywhere but on me and if I’m not with her she hysterically cries. The only time she is fine by herself is when she is on her play mat, but she is over it within 15 minutes.