37 weeks = full term, no need for adjustments.
It is a good idea, however, to realize that you are smack in the middle of the 6 week growth spurt, which can be killer for how often baby wants to eat and how seldom they sleep very long. So your expectations are most likely not in line with what to expect from a 6 week old. most 6 week olds going thru a growth spurt want to eat every 1-2 hours and about 10-16 times a day.