I really don't think you are understanding what everyone is suggesting. You seem to want to keep doing things that have very short rest and primarily aerobic in nature. Once again, I would put the focus on getting back some top end speed and then start a progression based on lactic tolerance over time.
I am copying the 600m progression for Bungei leading up to the Olympics that was listed in the sub-150 800m thread that has a ton of great advice in it. You will obviously need to adjust the times to your current fitness:
I can't say it any better than this:
But you must not think of the type of workout (that is clearly over the Threshold, and can reach 11 - 13 mmol for a top runner well trained), but of the EFFECT of this training. The question was : what type of training do you use for improving AnT ? The answer is : a lot of run that we can check between 95 and 105 % of the speed of the race.
I want to describe, for example, one type of training that Gianni Ghidini (the current coach of Bungei, Yiampoy and Kamal) and me use with these guys during the last period, having the goal to IMPROVE SPECIFIC ENDURANCE, developing intensity from the Threshold to Specific Endurance.
1) 6 x 600m (rec. 4 min) in 1:28 (60/28) 1:28 (60/28) 1:27 (60/27) 1:27 (60/27) 1:26 (60/26) 1:26 (60/26)
2) (about 10 days later) 5 x 600 (rec. 5 min) in 1:26 (60/26) 1:25 (59/26) 1:25 (59/26) 1:24 (59/25) 1:24 (59/25)
3) (about 10 days later) 4 x 600 (rec. 6 min) in 1:23 (57/26) 1:22 (57/25) 1:21 (57/24) 1:20 (56/24)
4) (about 10 days later, in the case of Bungei 8 days before Zurich) 3 x 600 (rec. 8 min) in 1:19.3 (54.2/25.1) 1:19.5 (54.6/24.9) 1:17.2 (53.0/24.2)
The next workout (before OG) will be 2 x 600 (rec. 10 min) in 1:16 (52/24).
This type of work starts about 2 months before the main event, having the goal of supporting AnT. After the first two sessions, when we test the speed at a level of lactate of 6 mmol, we can find an improvement of about 5-8 sec, per km. After the first two sessions, the focus of this training is the improvement of SPECIFIC ENDURANCE, joined with the capacity of increasing speed in the final of the race. The 5th workout is very specific,lactate reaches a level of 16-18 mmol, but in any case is an evolution of the first workout.
The normal use of groups of short distances increasing the speed every test, is a good way for increasing the AnT in aspecialist of 800 or 1500m. For example, 4 groups of 3 x 300m in 42/40/38 with 2 min recovery (and 5 min between the sets), or 4 groups of 3 x 600min 1:33/1:30/1:27 rec. 2 min and 5min, for specialists of 800 and 1500/3000m respectively, are workouts very good for increasing the AnT.
But what is important to remember, is that every distance needs a specific Aerobic Support, that is not the real AnT. For example, in the case of 3000 SC/5000, we can create a MAX LASS (Maximum Lactate Steady State) of 6/8 min at a level of 11-13 mmol of lactate, and the AnT that we need is the speed at a level of 8 mmol about. So, don`t pay attention at the CONVENTIONAL THRESHOLD of 4 mmol,because is something for physiologists, but really in many case doesn´t mean anything.
I try to write the level of lactate that you must use like AEROBIC SUPPORT for the specific workouts in different events :
800m 8-12 mmol
1500m 7-10
5000m 6-8
10000m 5-7
HM 4-5
Mar 4
Here is the link to the sub-1:50 800m training thread:
http://www.letsrun.com/forum/flat_read.php?thread=2669719&page=0