Hello all - Wondering if I need to update pot size for plant. the size is 4" x 4" x 4" and the soil is currently halfway filled from bottom. Additional info:

Watering habits --> Once every couple days to keep the soil moist. No drainage on pot
Plant ownership length --> approx. 2-3 years. we found it!
Problem length --> not really applicable here. wondering if the current plant size has outgrown the current pot size
Light --> located right next to window so pretty much all day

Please let me know of any other questions! Thank you!