I had a few girls last year that got toxified early on from a spider mite infestation. I didn't know anything about spider mites back then so they got pretty thick on the plant. By the time I got them under control my Creamsicle were already in the flower cycle where the leaves naturally produce fewer fingers. Only saw a couple sets of 5's before harvest. I'm not saying you have bug problems, though it's always good to do regular pest checks with a 30x loupe or better, but the mites caused serious nitrogen deficiencies, among others nutes. My point is, in my experience, a long term nutrient deficiency can cause permanent changes in growth patterns. IMO, don't worry about how many fingers they have. Just make sure you don't have any pests and focus on making sure those 3 leaf sets stay healthy through a stable nutrient regime, a good no-till method, or quality organic soil and compost amendments.
Focus on pinpointing the cause of the problem that way your not constantly running behind the symptoms playing catch-up. I just dealt with a Broad Mite infestation that caused those exact symptoms. You'll need at least a 60x loupe or 100x scope to check for them. They're much smaller (1/5 the sise) than Spider Mites. If you do have an infestation of Broad Mites/Cyclomen Mites (they cause clawing and a knarled leaf curl like you have) then Flying Skull's Nuke Em should eradicate them. I think it works on Russet mites (leave dead branch ends and leaf knarl/curling like the Broads, but also leave a brown dusting of bodies) as well but you'd have to check.
Azamax works on Spider Mites (they leave little clusters of white freckles on the top side of leaves).
If you do have Broads it looks like they aren't too far to recover. Broad mite phytotoxins do not dissipate after the mites are dead. The leaves that are damaged do not recover and if there's high enough % of toxin then they will eventually die with no chance of recovery. If they are very young and you can replace them, sometimes it's the better option
ie, Broad Mite damage... (too small for me to get any pics of the actual mites)
Two Spot Spider Mites (the Borg)...