When I use using my low durability bow that's had low health on my bow I use the now but when I switch to my second bow while I was fireing my first bow the new second bow durability when down like my first bow

1.have one bow in hand that has been damaged
2.hold the bow while charging the bow
3.press you second new bow while still charging the first bow
4.the charging will stop and will not fire and the second new bow will have the same durability as the damaged one