Hey Kimmy... is there anyway you can do lower body weights when you swim... and upper body weights when you run?
It might work better if you can focus muscle groups that won't be worked during your tri training session.
Or, maybe you do upper body on a cycling day.
I think you can cut your weight sessions down to less time. Maybe just do one exercise (3 sets of 10-12 reps of one exercise) for each muscle group?
For me... I can't get weights in. Well, I possibly could, but I can't really train and be sore from weight training all at the same time. Doesn't work for me. Although, my arms sure are flabby these days.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather, to skid in broadside thoroughly used-up, totally worn out, and loudly proclaiming: WOW WHAT A RIDE!!!!"