How much light do my potted apple grafts need?

2 weeks ago I potted some bud9 rootstock. I didnt grafts it at the time as I was waiting for the buds to swell. They have been sitting outside ever since. Some days they get sun, lately they’ve gotten rain and they’ve seen temps down to near freezing. Temps have been warm all week and the suns been hitting them for 2 days. The buds have swollen on the rootstock so I decided to graft them today. I tried whip and tongue grafting a few and also used a saddle grafting tool for the others. It worked very well.

So now what should I do with them? Can they handle the same type of environment that my bare rootstock did? Or do they need to be sheltered until they take? Can they handle direct sunlight? Or night temps down in the 40’s?

Im also wondering

I grafted 2 early mc and 2 novamac to m7 rootstock last spring…

Best I remember i grafted them around April 10.

I kept them on the north side of my house for a week or two… started seeing buds swelling…

Then moved them to my back porch which faces east… gets good morning sun but no hot evening sun.

Took this pic on april 23

This one april 28

This one may 7… still on my back porch… morning sun only.

This one on june 3… i had moved them to full sun at that point.

Hope this helps.