Tri / Triathlon / Triathlons - do they float your boat?

My plan is roughly
2x 1hr swim - one focused on speed and technique, the other focussed on distance.
3x short run sessions focussed on intervals, hills or speed work
1x long run
1x long fast paced club ride with a switch to the tt bike when the weather gets a bit better again.
1 x stretching/core session (yoga/pilates)
2 x strength sessions

The rest of the week will include a c.10 mile commute on a brompton most days.

This is basically what I've been doing for the last 6 months except I haven't done many long bike rides and there has been only one short run.

Looks good to me.

I would on occasion swim the 3.8 kms without a wetsuit, so you know you can do it, especially if wetsuits are not allowed on the day. Maybe teaching you how to suck eggs, but also train with the wetsuit, do the distance in open water to make sure everything is comfortable.

Another tip, when you pick an event, check what gels, etc they are dishing out free. If you like them/agree with them, use them is training. Then you know you are good to use the event stuff and you don't have to travel with and carry a tonne of gels etc with you, like I did.