Donald did say he thought Roe should be “changed”. That is far from saying it should be reversed.
In January 2015 Trump did say in a an interview that is on You Tube in which he said his approval for abortion, besides rape, incest, and life of the mother, was based on “when” the abortion took place. He did not define when “when” was. It could have been O.K. before 6 weeks, 12 weeks, or 35 weeks for all I know. He didn’t explain further.
The best way to do it is through a Constitutional Amendment and I am sure Trump understands that we are not there just yet. We have 30 states but the probable is the Senate. I am surprised how many abortion clinics have closed all over the country the last 10 years. It is awesome.