Why do you have workouts so often? (ref your dates..) If you are tired, you shouldn't be doing heavy stuff 3 days in a row?
You have pretty good numbers on your lifts! I am a little unsure of why you did so many sets on the April 23.?
Are you resting enough between sets? If you fail to take 5 reps... you should have a rest between 5 to 10 minutes if you have to. Dont rush it.
It is important to get all 5 reps... so try to stick to it.
Anyways, you could also try to have I "light Wednesday" for the squat. About 60-80% of you Monday workout. That will make your body feel better. Mine did! And I am 34, in my 8 week of NLP, and took my first light Wednesday. You just keep adding pounds to the Monday and Friday workout.
Keep on going!