SINKING FUNDS QUESTION. Ugh I’m having a hard time of evenly adding money into my sinking funds.SINKING FUNDS QUESTION. Ugh I’m having a hard time of evenly adding money into my sinking funds. I’m a server so my tips are a little all over the place. For some reason though instead of splitting them up, I’m continuously putting it all into one envelope until the goal is reached. However, it leaves my other sinking funds either empty or very little in them and when I need to use them the money is not there. I know I struggle with this but can’t seem to make myself add to other envelopes. How can I fix this mentality?!