Getting baby to sleep at night

How do you y’all get your babies to sleep at night? I can see a change the past three days with my 8 weeker where he’ll get tired and go down after bath between 8-930 But I have to walk him around to get him to sleep. Yesterday I had to hold him awhile (standing). I’m thinking I need to start a better routine putting him to sleep upstairs but currently he will only sleep on or next to a body or sleep in the swing (moving). So I’m thinking tomorrow I’ll try to put him down alone upstairs. I’m just worried about getting a routine down before I go back to work that will work for us and will work with our current living situation. I’m worried about the long term too for when he gets older cause I used a rocking chair with my daughter but I don’t have that for him right now.