If I were you, and as scared as you're right now, I would do the following – take out my initial capital ($250) and don't reinvest it. Then leave 50% of the $550 difference in Shib as my moon bag. Reinvest the remaining 50% into any alt(s) that I fancy.

However, my true position as an investor in respect to this Shib question would mean I don't do anything yet because I know there's no cause for panic. I will just let the $800 continue to grow until I begin to sight signs of Bitcoin dominance going down. When that happens, I will take out half of the whole cash and allow the rest roll in expectation of an alt rally.