Hi, marie - some great stuff already on this thread, especially about actually speaking to someone in RL like a breastfeeding counsellor. Sometimes I think a lot of posts on a thread can be overwhelming, and of course there's no real dialogue with you so it can be confusing.
Generally, resting does not help with milk supply; drinking more water does not help with milk supply; eating particular foods or more food does not help with milk supply. I say 'generally' because individuals may feel these things do, and anyway they help with overall well-being, but there is no biological reason why they would help and they have been shown in research to make no difference. So changing your routines and intake is not necessary, usually.
In any case, your baby may be behaving perfectly normally - 8 week old babies do feed a lot. Even if you could increase your supply by doing all those things above (which I would suggest would not happen anyway), what is the point of increasing it - if your baby is well, happy as long as he has close access to the breast, and growing as he should, there is no need for you to make more milk
It is usually easier (as ShowofHands says) to change your expectations and 'self-management' than to change the normal needs of a young baby - so to adapt how you sleep to make it easier to do night feeds; to accept that feeds take an hour or more with no more than a short gap and try to get help with other stuff you need to do; to accept he is happier close to you and experiment with slings to find one that's comfortable and which keeps him close and allows your arms to be free; to avoid trying to put him down all the time which makes babies like yours upset and frustrated and actually more likely to express a need to feed often...all these things may be a challenge, but you can change more easily than your baby who has no language, real memory of anything but his own immediate experience and needs, and who will grow out of this need in time
Formula may 'settle' babies but this is a result of the harder work of digesting it -and of course it undermines your choice to breastfeed, so using it has drawbacks.
Find some good help in real life, and use whoever is in your life to help you through this time with support for you and practical help with chores etc.
Hope things get easier for you soon