Put baby to breast as often as possible, several times an hour is not too much. Actually that is the norm for the human species. Even if you can only put baby to breast a few times per day but then cosleep at night, that should help.. Your prolactin hormone levels peak between
1-5 am, so babies feed frequently in those early morning hours, as milk production is most abundant. That is a very important time though. It is irrelevant now, but to show how important it is, nursing between those hours often impacts when a woman will become fertile again.
Regarding nursing during the day, wearing baby in a wrap, carrier or sling, thus in close proximity to the breast, will encourage latching on and milk intake. The more milk baby takes in, the more your body will produce.