tetrathlon training ?

starting tetrathlons again after the last summer season finished. have a training schedule in mind but would like some refining as by no means an expert in this field :/

tetrathlon btw is 4 sports done over a day but not back to back

run at 3000m
swim for 3mins
and then riding and swimming but not needing help to train for them

routine for training i have come up with is as follows

monday-run 30 mins
wednesday- run 30 mins
thursday-swim 1hr
saturday-sprints for 20 mins
sunday-run 20 mins