You can safely cosleep but as Geri said, look up advice on the best way to do this. Like you, my little one sleeps from 8/9pm through to around 3/4am. She has a feed but then doesn't settle in her crib despite multiple attempts on trying to get her to relax. So, to save my sanity I bring her into bed with me and ensure there's lots of space. We are lucky to have a Super King size bed which really helps!
Look at happycosleeper on Instagram too she has lots of helpful information I’ve been following this and co sleeping with my little girl. X
You can safely co sleep, I did this with my daughter from around 6 months until around 2. Some good advice/guidance on the link x https://www.lullabytrust.org.uk/safer-sleep-advice/co-sleeping/