Shell Is there a sh equivalent to bash's "<<<" redirection operator?

Basically I want to convert a bash script which swaps workspaces between monitors, with one keybind, into a POSIX shell, but I don't know how to replace the redirection operator <<< with a sh compliant operator/command.
Original bash script:
Bash:
#!/usr/bin/env bash
    # requires jq
    
    DISPLAY_CONFIG=($(i3-msg -t get_outputs | jq -r '.[]|"\(.name):\(.current_workspace)"'))
    
    for ROW in "${DISPLAY_CONFIG[@]}"
    do
        IFS=':'
        read -ra CONFIG <<< "${ROW}"
        if [ "${CONFIG[0]}" != "null" ] && [ "${CONFIG[1]}" != "null" ]; then
            echo "moving ${CONFIG[1]} right..."
            i3-msg -- workspace --no-auto-back-and-forth "${CONFIG[1]}"
            i3-msg -- move workspace to output right    
        fi
    done

My workaround script:
C:
#!/bin/sh
# requires jq

DISPLAY_CONFIG=$(i3-msg -t get_outputs | jq -r '.[]|select(.active == true) |"\(.current_workspace)"')

for ROW in "${DISPLAY_CONFIG[@]}"
do
    IFS=' '
    read -r CONFIG <<< "${ROW}"
    i3-msg -- workspace --no-auto-back-and-forth "${CONFIG}"
    i3-msg -- move workspace to output right
done

Output:
Code:
sh -vx display_swap                                                                                                                                                                           
#!/bin/sh
# requires jq
    
DISPLAY_CONFIG=$(i3-msg -t get_outputs | jq -r '.[]|select(.active == true) |"\(.current_workspace)"')
+ i3-msg -t get_outputs
+ jq -r '.[]|select(.active == true) |"\(.current_workspace)"'
+ DISPLAY_CONFIG=$'1 
2 '
    
for ROW in "${DISPLAY_CONFIG[@]}"
do
    IFS=' '
    read -r CONFIG <<< "${ROW}"
display_swap: 9: Syntax error: redirection unexpected (expecting word)

Any Idea?
 
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