I really try to plan it around shit im doing. For instance, if I was going somewhere later this month I would grow it out until then and possibly go up to 8-10 weeks w/o a cut, even though it will start to look shaggy. I trim the ear area and neck though.
Right now, not much is happening. So 4 maybe 5 weeks seems about right. Ill be due again in 2 weeks. Ikeep it finger length short and messy,