Need help. I'm 4 months old in investing in stocks, but I can learn pretty quick.. my current situation is tough though..

Okay I have 5k in my account and I can't deposit more.. let me explain:

I have a son who has a rare disease. In short someone has to be with him all the time. He can't go to school yet because any type of sickness as simple as a headache or stomachache can cause a domino effect that may cost his life. So I can't work, but I'm currently studying as a nurse so I can be the one to work and not my wife.

My wife, who's a nurse, doesn't want to risk putting more money in investing stocks. So here I am confused on what to do.

Holding for long term:

CPSH @ 160 shares (bought at $25 per share, used to have this when at $6 had 250 shares, but had to transfer from robinhood to fidelity) STPK @ 23

Holding for short term to buy more long term stocks:

SFTW @ 50 ARKX @ 20 GME @ 2

My question is.. should I just put all in one stock like CPSH or STPK? Trying to make this investing a life changing thing for my family.

Guys, please no rude comments. I'm just asking for some advice not stock picks.