AN sensi Bloom veg?

Look up how to make your own soil amendments, and organic nutes DIY, theres alot you can learn from these channels on YouTube, make nutes for veg :cannabis leaves mixed with same weight in brown sugar and let sit for a week or so, and you have a soil feed and foliage nutrients mix 10ml to a liter of clean water 👌 happy Christmas

I'm assuming you have these nutes and don't want to buy others, yes? If it was a photoperiod you were going to grow, I'd say no, probably wouldn't be good... but honestly, it might be ok for an autoflower but not alone... Both the Grow Part A and the Bloom Part A have exactly the same NPK - 3-0-0 so they're basically interchangeable... but you're going to need SOME P and K... so if you have the Grow Part B or the Bloom Part B, you should use it (Grow is preferable, Bloom I think would be acceptable)... Bloom Part B has almost double the amount of PK than does Grow Part B but that shouldn't worry you, not with an autoflower since the veg time is so short... I've often given my autos bloom nutes from the starting gate and it hasn't bothered them at all. Short answer - yes - but not alone as it's missing quite a few nutes that are needed. Good luck!

Not ideal, but it should be ok, Adding fish manure (which is a good thing) should boost the nitrogen content, and this is what is required during veg.