He is 3 weeks old and mix fed. mainly bf with the occasional top up. feel guilty enough about that but for the past two days he has wanted to constantly feed. Every hour. leaving me with no sleep and him constantly wanting more. last night I gave him a dummy and it instantly soothed him but I was a wreck. I desperately want to bf and really don't want to cause nipple confusion however I'm beyond exhausted. have I done the right thing? what other options are there?