Transplant autoflowering? 3 weeks

I have a 3 week old autoflowering blueberry in a 1.5 gallon pot. I started LST for it, going gentle at first. But my question is, should I transplant to a 3 gallon pot now? or leave it in the 1.5? I'm really a beginner and didn't know the difference between autoflowering when I bought the seeds, so was planning to do transplants the way I've seen recommended for photoperiod seeds, but now I've seen some posts that autoflowering shouldn't be transplanted so I'm not sure if I should or not.

transplanting auto's is risky, most folks will start in final pot to avoid transplanting

IMO...leave it in the pot you have

im gonna go ahead and suggestt he exact opposite as the above comment. i would leave it also, IF it were in a bigger pot. you can transplant without disturbing yr plant at all if done properly. also, a root bound plant will cause much more issues then mild transplant shock, even if done by the biggest noob.
i have transplanted almost every auto ive grown.
i like to do it when the medium is slightly wet, so it sticks together when it comes out the pot.
gently squeeze the sides of the pot to get it ready to come out. always havve yr next pot ready with a few inches of soil or coco, watever yr using, then place yr hand over the top of the medium, with the base of the stem in between yr fingers, get a secure hold and now turn the plant upside down with yr hand still holding it securely, and slowly and genly ease the plant out and carefully set it in its new pot. now take yr medium and quickly fill in around the sides so yr roots aren't exposed to light for very long.
yr done!
one more thing, i always water a good water after transplant to make sure there is no air pockets.
i read same things asyou about not transplanting autos, and worried just the same and someone told me wat im tellin you...
ppl say not to because autos are on a tight time schedule, and any days lost to stress\shock cannot be made up, so you really want to try to avoid stressing them to much. follow the above when doing it and you'll be jyst fine

The only benefit from transplanting and auto is if you wanna grow a massive yielder or a too tall plant that won't fit in your space as if you transplant at the right time you can grow those big yielders because of the stunted growth, just gotta think outside the box

Hey guys. Thanks for the advice. I decided since this first run is a learning effort, I'm going to leave these 2 in the 1.5 gallon pots, and my other 2 seedlings that are 2 weeks behind I will transfer from their small cups right into the 3 gallon and just see what the difference is between yield in 3 gallon and 1.5

My closet isn't really large enough for 4x 3 gallon anyway, so this is probably a good compromise. I probably should only do 2 plants at a time, but that's why this is a learning opportunity.

you will notice a difference