Calculations not working in worksheet

Hello! Hoping someone may be able to help.
I've created this worksheet for a client which calculates a spending and retirement budget. I created all of the calculation fields in Acrobat 2025 (Mac). The "Total spending" section calculates a monthly and annual amounts. The annual amount basically multiplies the monthly by 12. Simple, right? When entering values starting at the top left, the first section performs as expected, but the remaining sections don't totally calculate the annual correctly until you tab to the next section and enter a value. Not ideal, but we can live with that. The real problem is in the "Discretionary spending" section - the annual cell doesn't calculate properly until you tab through the cells and enter a value in the first "Social Security" cell. Very much appreciate any insight into why this is happening.