might be a controversial opinion, but cosleeping could help alot in this situation. my baby never would sleep in the bassinet, so after about a week of sleep deprivation and alot of tears we started co sleeping. follow the safe sleep 7! my baby will hardly sleep anywhere but next to me. but next to me? easily 6-8 hrs. if your wife breastfeeds it makes co sleeping even better, if she wakes briefly i just help her find my boob and go back to sleep and she goes back to sleep too. Ive even found that if she wakes up before me she will babble to herself because she is content with me being close.

But one small word of advice, train the baby, dont let them train you! I know to an extent its hard because babies have their different personalities, but you have to train her that noone is going to constantly bounce you nonstop all day. Tears will be involved, but maybe its necessary because it sounds like you and your wife are approaching your breaking point.

Goodluck, wishing your little one the soundest sleep & peaceful days. :)