... 2 more weeks then flip would you say? ...
Hard to see if there are any open spots in the mesh. If there are no openings in the net, start the flip now. If there are some open areas that you can fill in, do that first ... then flip.
... Keep exfoliating every couple of weeks ? ...
I wouldn't defoliate willy nilly. But there is some targeted pruning that you can do pretty soon. And there is some pruning you can do in a few weeks.
Right now, your canopy is getting to be pretty thick so the stuff down below the netting is useless. I would recommend doing some lollipopping and remove any fan leaves and small sucker buds sites that are below the net. They are not going to help the plant grow or give you anything useful so snip 'em off.
After Week 4 of flower, you can go after more of those sucker branches - also from below the net. Suckers are those small weak twigs who's top has not penetrated into the main canopy and will be light starved. You can see that the sucker buds are smaller and larfier that the stuff developing in the main canopy. By waiting till week 4 and letting the stretch complete, you can see those branches easier and you don't accidentally snip what might be a donkey dick.
At that same time, you can also selectively defoliate some portions of any fan leaves that are blocking bud sites.