Having a link to the actual meter module might be helpful in looking for ideas. *Sometimes* you can play some games with sense connections to work off the same supply - but if you are doing current measurement as well, then that's pretty much off the books.

Also, two things -

1. Your voltage divider for the volts range is wrong. It will divide by 101 not 100. To divide by 100, the ratio of the *sum* of the upper and lower resistors must be 100 times the value of the lower resistor. For example, with the lower resistor being 100 ohms, the upper resistor needs to be 9900 ohms, not 10K.

2. As wired, the current display will be negative. With current flowing, the meter's "negative" input will be at a higher potential than it's "positive" input. If you want it to show as positive (and still keep your voltage sense correct) you will need a DPDT switch and switch both sides of the meter input.