Outdoor Grow, Fox Farm Nute Question

Im growing outside and I am currently using Fox Farm's Grow Big. I looked at the schedule on their website and it says 2 tsp per gallon every week and your supposed to feed every other watering. The thing is I am only able to water once a week at most. So should I just feed them the 2 tsp per gallon every week when I water them or should I water them every week and only feed every 2 weeks?

Right now I am only using 1 tsp per gallon, every other week, should I double it since I'm only feeding every other week and not every week like the soil feed schedule says?

What do you guys think? Also, I plan on getting some Big Bloom in the next couple weeks.

Pz

Anyone? I will probably just start at 1/2 strength and feed them every 2 weeks. I will then try to move up to full strength after a bit.

Im doing a guerrilla grow, so I can't be visiting the site all the time. So today I filled up a 5 gallon bucket with 3 gallons of creek water and put in 3 tsp of Grow Big and fed each of my plants about a gallon (I only got 3 plants right now that are about 7-8 weeks old). I may go back and water in a week if it doesn't rain much, otherwise I will visit in 2 weeks and feed them another gallon each with a little more than a teaspoon of Grow Big per gallon.

After that hopefully I should be able to get some Big Bloom and pH tester.