Hi Justine,
Of course. I understand -- I'm going through the same thing with my back squat. Feels like it won't budge.
Before you start GSF2, I suggest you set up an account on adaptifier.com (you get a free year with LWF2 purchase, so search you email for adaptifier and you'll find a code). That way, you see your volume and density PRs, not just your intensity. So you see things move, even when it feels like your max isn't budging.
You'll note that my progress has been decidedly non-linear.
Here's my DL progress. A couple notes:
a) my sumos and conventional DLs tend to be able the same, weight-wise
b) at the beginning, I was still getting a hang of weight selection and proper form, so weight went up quickly (largely due to things other than strength gain)
c) my recent PRs have been lone heavy singles, not my working weight. My working weights are always significantly lower.
Nia K.I.S.S.
Phase 1 sumo 2x3 from 170# to 195#
Phase 2 conventional 2x3 210# to 220#I
Nia Simple Strength 2 (all DLs conventional)
Phase 1 2x5 started at 195 but at the end backed down to 155 to focus on form
Phase 2 3x3 175 to 210
Phase 3 5x2 215 to 235
GSF2
This is really hard to say, as I've done sumos, conventional, and Jefferson DLs, generally at lower working weights, sometimes for huge volume PRs (but not crazy heavy). Basically variety here is key -- but biofeedback-driven variety. I maxed once at 245# during phase 1, then maxed once at 265# during phase 3, but my plates were ~4# higher (though I was pulling in running shoes with orthopedic inserts, instead of bare feet, LOL). I realize that's kinda apples and oranges.
Does that answer your question?
I dunno, I'm a little wary of setting time-limited intensity goals... because your body will adapt as fast as it adapts, and then if you 'miss' your goal, you feel like you failed, even though you were killing it all along.
My two cents, no intention to offend or direct, just a thought.
Karen... any thoughts on progressing squat weights?!
xoxo
Roz