Re: 4.5 month old really fussy at boob - low milk supply?
hi! if your LO is nursing on demand, has enough wets & poops, and you're not pregnant or on birth control, you have enough milk. (why do people always assume they are running out of milk? it's just such a huge and usually unfounded fear!)
4.5 month olds can be fussy at the boob for any nubmer of reasons, many of which you mentioned. and sleep changes are normal ath this age, even for babies who haven't moved and whose moms are well rested. waking every 2 hours to nurse is normal, too.
so it seems to me that your stress and exhaustion is something you need to address, but it's almost certainly NOT significantly affecting your milk supply. remember, mamas successfully nurse babies through famine, war, lots of things much more stressful than moving.
for sleep - i recommend ear plugs, white noise, a rug on the wall, and speaking to your neighbor (maybe not in that order!) for food, are you too busy to eat? too stressed to have an appetite? if you tell us more we can help you brainstorm some options. same with your relationship with DH.
Nursing, pumping, cloth-diapering, babywearing, working professor mama with the awesomest SAHD ever.