Interesting question, Makavelia. I’m a newbie to PE, but, unlike you, have been actively engaged in restoring my foreskin for quite some time. My hesitation with embarking on PE was mostly due to fears of the opposite. I am/was worried that starting PE might actually slow down my foreskin recovery process. (Sort of, like, wrapping a bigger parcel with the same size wrapping paper). I can’t give you a definitive answer, but I can assure you, it takes a lot of actively directed stretching to actually grow length to the foreskin. My hope is that along with the internal tissue etc., the skin will keep up. Hopefully, someone with a bit more experience will post a reply to your question. I’ll be keeping a watch on activity in this thread.
If it turns out that your worries are confirmed, I know a LOT of guys who’ll be signing up here to get started! :-)