As the other guy said, it takes 1 full year to see the results of this stuff. Sometimes the regrowth even kicks in shortly after 12 months for SOME.
If you're depressed now about it, you will be even more once you STOP the foam and you lose whatever you've gained from it. This stuff is so easy to apply and cheap, if you care that much about your hair where it makes you depressed then you should stick with it. These things are long-term commitments. You at least do not give it the full 1-year before making any evaluation of how well it worked or did not work.
You're almost HALF way there. Just STICK with it!!! A lot of those vellous will probably go terminal. You need to understand that it takes time for hair just to GROW and you have to figure into play how long a hair cycle lasts. You're not going to instantly go from no hair, to vellous hair, to a full thick terminal hair. It's probably going to take a few full hair cycles and each subsequent one a thicker hair will likely pop out. This is why it takes at least one year to evaluate.
It's good that you're on finasteride now as well, but you're results of finasteride alone is NOT going to be anywhere near as good as if you just keep using the foam. Are you using the Big 3? Are you shampooing with the new Revita 5x per week or at LEAST Nizoral every 3 days?
You also have Spectral DNC you can switch to if you don't like the results of the foam in 12-15 months. It's minoxidil with a number of other proven regrowth ingredients as well. I would stick with the foam for now though because it's easy to apply and actually has a cosmetic effect on the hair while Spectral DNC has a negative cosmetic effect.
You have other weapons still at your disposal. Tricomin/Folligen in addition to the minoxidil, spironolactone cream, Retin-A, etc. Don't give in. I'm not sure why you'd be depressed, you should be happy that you're going to get some new hairs in, you're just being impatient. Good luck.