RS485 minimum node spacing - 3 x RS485 device on PCB
termination is only required on long lines with high data rates.  The purpose of the termination is to make the end of line impedance same as wire impedance to avoid reflections of the wavefront.  But this is totally unnecessary on a short bus.

My company manufacturers 100,000+ devices a year (for 10+ years) with a 2 meter RS-485 bus and we don't use terminators.

There are many app. notes on this.