Hi, arishy!
Adding my two cents to what b(ut)ob(ut)hc told you, there're 3 ways to avoid using the keyboard for debugging line to line VBA code:
1) Using a standard feature of the VBA editor: Debug, F8, but it isn't user friendly, 2 clicks.
2) Using a customizable feature of the VBA editor: View, Toolbars, Debug, and there you'll find at the 6th button/icon the step by step mouse access.
3) Using a standard customizable feature or the VBA editor: View, Toolbars, Customize, Commands, and select the F8 equivalent button and drag&drop it on any toolbar.
If I were you, I'd choose the 2nd.
Regards!