Directions for use...dry bat guano

this bat guano listed here
Jamaican Bat Guano
says to use 1-3 Tbsp per gallon of water, water around base of plants
and Repeat every 4-weeks

im wondering what the formula would be if i was to use it every week?

1/2 tbs per week first 2 weeks and work up to 1 tbs, is my edumacated guess. I'm careful like that.