“Parenting orders are inherently exercises of discretion: Van de Perre v. Edwards, 2001 SCC 60, [2001] 2 S.C.R. 1014, at para. 13. A trial judge’s exercise of discretion and factual findings in connection with it are entitled to deference on appeal: A.M. v. C.H., 2019 ONCA 764, 32 R.F.L. (8th) 1, at para. 4. The caution an appellate court must show before interfering with a parenting order by a trial judge is all the more pronounced where, as here, the decision has already been implemented and we are asked to interfere with the trial judge’s step by step process mid-course, but without current information.”