Im a 34 yo male. I am overweight and trying to find my sweet spot with 1x AMMO. Is 3 sprays too much?
Three sprays does not sound unreasonable for a thirty four year old but have you tried one and two sprays first?
Starting from the bottom and working-up really is the only way to be certain.
Also situation plays a part and your sweet spot in some (daytime, work, polite company) may well be different to other less inhibited places (eg bars, clubs, parties)
Some more info about yourself, your situation, who you want to influence and your opportunities to use pheros will help get better advice - and earn you the GC. 
Welcome Omni,
Like my team member advised,please tell us more about yourself , how you got to know about this forum and what you hope to gain by wearing mones, so we can assist you further
3 sprays might be, it might not be. It all depends on you. I find 2 works great for me personally but it’s really something you just need to play with yourself.
I recommend wearing 1 spray out to some social setting you are comfortable in. Pay attention to how women react. Go out a second time in a similar setting in a similar crowd but with 2 sprays. Repeat a third time with 3 sprays. I’d even go as far as to try 4 sprays (because this might be a bit of an overdose). See which one seems to work best for you and try that number for a while.
I find Ammo is one or two sprays for me max in most situations. Do pair it with Instant Shine, about two sprays. As others here have said, test, test, test, start low and work up.