12 weeks old baby sleeping through the night

For the past few weeks my baby boy (exclusively brestfed) had longer sleep streches. I just took him and put him to the breast when i heard him fussing a little, he nursed half asleep and then I transferred him back to his bassinet. Last night and the night before through, he only fussed once around 3 am and nursed very little (like for thirst, not hunger) and then slept so deep, he would not open his mouth at all. His next meal was at 7 am.

He eats well during the day and a lot in the evening before bed (sleeps around 10 pm). He has enough wet dipers during the day, his night diper does not need changing until morning. He grew very well, has 7.1 kg (15 lbs 10 Oz) and is a happy and content baby.

My dilemas are:

1. Should I wake him during the night to have a full meal? Is it ok for babies this age not to eat much from 10 pm to 7 am?

2. Will my milk supply drop if he does not nurse during the night? Do I need to have a pumping session? (I would do it just for the milk supply, i am not interested in building a stash)

Maybe I am incredibly lucky and I should

just be happy for this, but I am worrying a lot instead.

Thank you