TF A904 reverse issue - band adjustment

I think you have a common problem on Mopar automatics with cold starts. At rest, your torque convertor is draining back to the pan, so on cold starts your convertor is basically low on fluid. Most of us have learned to live with this little problem. On cold starts we shift from P, to N, to D, to N, to R, to P. This gives the trans the pathway and the time to fill the convertor. Then the rest of day it will be good.