My daughter slept in a bassinet by our bed and this is what worked well for us:
The first two weeks I just fed on demand and went by instinct while I got used to being a mom.
At 2 weeks, we picked a wake up time and a bed time. At the wake up time, we got up to start the day and if little one was still sleeping, I woke her up. These times did change a bit throughout the first couple of months depending on her needs and her nap schedule.
During the day we did eat, play, sleep. I'd wake her up, nurse her, we'd play and hold until nap time and then repeat.
We picked a bedtime and started a bedtime routine early on. Once bedtime hit, there was no more playing or stimulation. If she needed to be held instead of sleep in her bassinet, that was fine but I did it in a dark or low lit and quiet room. When she woke up in the middle of the night it was to change her diaper, nurse her, and right back to bed. No playing at night no matter how awake she was.
My daughter gained weight really well so our doctor said from birth that I could let her sleep 4 hours straight at night if she would before waking her up to feed (she rarely did), by 2 weeks we could let her go 6 hours at night, and by 8 weeks she slept through the night. How often you feed at night really depends on your baby's growth needs, but you can help your little one learn day time is for playing and nighttime is for sleeping.
Good luck! Oh, and don't be discouraged if your baby sleeps all night for a couple weeks and then wakes up regularly for a week or two. This is normal as they grow, just stick to the routine as best you can for their current needs.