Alex,
There is an intervalometer called a Pixel TC-252. They're made for any camera.
Here is a version for your camera that costs $41 -
https://tinyurl.com/y92p9jbc
They have a number of modes. For astrophotographers they have an intervalometer mode.
Number of exposures . 0-9999
delay until first exposure 0-99h 99m 99s in 1s increments
interval between exposures 0-99h 99m 99s in 1s increments
length of shutter press at each exposure 0-99h 99m 99s in 1s increments
For example, you can set it to press the shutter 200 subs for 2 mins each at 5 min intervals. Leave the camera set to noise reduction on. Camera will take 2 min exposure, then 2 min dark, subtract the dark in camera and then write the file.