I don't think you'll have any problem going beyond your old 3.5 month record.

And I doubt you'd reached terminal by that point. At that length, it takes a lot more to notice a difference weekly, especially since you get used to seeing the beard every day in the mirror.

I'm breaking my goals down into more manageable pieces. So far 8 weeks is the first milestone.

It's going awesome so let go of that doubt!

Days of growing my beard