If not, I’ll write it off as a loss.

I’m considering tapping into this equity to fund future fix-and-flip projects or even purchase another rental property.My questions are:Do you think leveraging the equity in my properties is a smart move for real estate investments?

It’s so mental but if you have stuffed feelings of hatred against the successful people you see you actually are also going to judge your future self for becoming successful and likely sabotage it before you get there. 

and if you're re-financing after rehab, can you do it via another DSCR?

Many of them use RE crowdfunding platforms to gain more exposure.  

. - The home is 2 payments behind and already got a letter from the lender about future foreclose.

The only time I'd say it's an okay idea is if either: The area you're investing in is expecting so much appreciation that you will easily profit off that (watch out for mortgage interest though...the appreciation needs to be higher than what you pay in that and expenses to make it profitable)You have some specific reason for wanting to do it- family ties, future home, major long-term hold, etc.Maybe I'm forgetting another one, but those two are all I have for now...

This is my first investment of this sort and it has not worked out how I originally intended but I am learning from my mistakes and will be making better decisions in the near future What made you interested in investing in this type of deal?

They don't care when you try to explain all the future projects, they actually hate hearing that since it sounds like a scam, when an investor says, "Give me a good price and I will have a lot of work for you" it sends chills up their spines. 

Congrats on getting into RE.