day time waking to feed

EveTyer24

I'm trying to figure out what works for my girls to get them to that ultimate goal of sleeping and sleeping longer at night. As a ftm, I hear everyone's opinions about waking or not during the day. 

I've been pretty strict about keeping them on a schedule of feeding every 3- 3.5 hours during the day. Although they are only 6 weeks, sleep is not really happening at night. I just wonder, has anyone let your lo sleep longer during the days and not waken them to feed within the 4 hr mark?

What is more important to do during the days (or what do you find works best for you)- longer naps or following an every 3-3.5 hr feedings schedule?  

 Trying desperately to get longer stretches through the night.

TIA!