Sorelegs sounds like you're on the right track. It's been about 10 years since I've tried to do 3 workouts (including a long run) per week. Sometimes even with 1 workout + 1 long run I feel like I could use another day or two of recovery. A consequence of aging I suppose.
Here are the last 3 big weeks of my 2019 CIM buildup, before a 3 week taper, with miles and average paces:
Mon: AM - 5 @ 8:36; PM - 5 @ 8:31
Tues: 11.9 @ 8:11
Wed: AM - 12 incl. 2 x 5K (18:07, 4min jog, 17:50); PM - 5 @ 8:44
Thur: AM - 11.4 @ 7:49; PM - 5 @ 8:30
Fri: 12.1 @ 7:53
Sat: 10 @ 7:35
Sun: 24 @ 7:02 with 19-23 @ 6:0X pace
102 miles total
Mon: AM - 8.1 @ 8:48; PM - 5 @ 8:36
Tues: 11 @ 8:15
Wed: AM - 14.9 incl. 4 x 2 miles (11:47, 11:21, 11:13, 11:10, with 2min jog); PM - 3.3 @ 8:17
Thur: AM - 11.3 @ 7:54; PM: 5.7 @ 8:21
Fri: 12.4 @ 8:12
Sat: 10.4 @ 7:15
Sun: 20 @ 7:02 incl. 1, 2 min pickups during 2nd half
102 miles total
Mon: AM - 8 @ 8:55; PM - 5 @ 8:36
Tues: 11.3 @ 8:18
Wed: AM - 14.3 incl. 2K (3:27/29) + 6x1K (3:21, 3:21, 3:21, 3:19, 3:14, 3:19) + 2K (3:24/25); PM - 3.4 @ 8:31
Thur: AM - 11 @ 7:56; PM: 6 @ 8:20
Fri: 12 @ 7:41
Sat: 8.1 @ 7:40
Sun: 23 @ 6:37avg incl. 15 progression from 6:29-5:38 (Garmin told me it included a 1:17:08 half marathon)
102 miles total
One other thing: the first mile of almost all my runs is really easy - 8:30ish or sometimes even 9:00+ no matter what the plan is for the rest of that run.