The Idea is that the Dems can propose a smaller amount directed at specific items and omit others they disapprove. The Senate cannot add items or amounts that the House would not approve of else no defense appropriations or only sustained at current level (unlikely). Items which need specific line funding like a new weapons program or the Space Force are dead. Riders are going to be common - these will be either trade offs for more domestic spending or military specific social programs (most likely).
Shut the government down and blame them
Problem solved