She is still young so give her a bit of time and don't get to hung up on it atm. Her body clock will slowly start to adjust over the coming weeks. Its not something babies are born understanding so we have to get them used to the whole day/night thing slowly.
My suggestions would be to make sure daytime and night time are very different. Noise in the daytime, feed on the sofa or chair, bright rooms, talk to her during feeds etc. Then at night from bedtime onwards make it quieter, darker and keep talking and eye contact to a minimum with her. Infacol should help with her colic. Give it before every feed for as long as its needed. Takes are few days to take effect and can be used for weeks if need be.
I'd not bath every night personally but would have a bedtime routine in semi darkness and then feed on the bed and pop into her basket or wherever she is going to sleep.
Also remember she is still adjusting to being in the world and wants to be close to you. At night babies seem to like nothing better than to fall asleep on you rather than in a basket or cot. As they get older that usually changes. She may just want you to cuddle her to help her feel secure.
You can slowly help her adjust in these ways. It may take a fair while yet for her body to sort things out however, especially this time of year when days are so short. Encourage her in the daytime with tummy time for a few minutes, face to face contact, simple ways to help stimulate her senses and make her more alert in the day for short periods. IIRC my son was about 8 weeks before the sleeping longer at night really kicked in and 12, 14 weeks before he slept longer than 8 hours in one go at night. However he was also awake all day and was defo not a day time sleeper.
