Graph: Months as X-Axis and line between dots

I have the graph below, I want the X-axis to be the selected months (January, feb and march per example, sometimes the full year). The stacked bars represent spend per category.
The dots represent the budget for each month, I want a line between each monthly budget.

Please help!

I know I can change the grouping of the query so that the X-axis becomes months but then how do I keep the stacks of spend per category for each month?

Did you solve this problem?