Latch for not more than 10mins and lo ownself unlatch, but 45mins later wants boobs again? This happens at midnight. So hard to get sleep. Lo will keep fussing and awake for the whole night but in daytime sleep like angel. I feel like midnight's time lo has been on my boobs so often that i cant even go toilet. Any mums encounter this? Does this means i dont have supply?

It could be a few things. You haven't mentioned your baby's age. So, maybe your baby is having a growth spurt, or comfort nursing. I went through something like this in both instances where my baby was up the whole night latching and unlatching, leaving me with very little sleep. So I know how you feel - it's super tiring. If it's a growth spurt, then your body will adjust to your baby's increased demand and not to worry, it'll be over in a few days - and the definite plus is that your baby is growing rapidly during this time. If it's comfort latching, you can monitor your baby and see if this continues for more than a few days, then you may have to gently help your baby stop.