Question about recharging AC

So I have a 2018 CRV that is known to have bad compressor seals. My AC was struggling so I decided to purchase pure refrigerant (no leak stop) and a single hose manifold. My low side pressure was at roughly 30 and was able to top it off.

I was thinking about it and reading up on it after the fact and realized with this method probably introduced some air from the manifold hose. My question is if this is a big deal or if I am probably okay?

I know I need to eventually replace the compressor or seals but just trying to buy a little time.

I know it’s always best to pull a vacuum but I didnt have the means to do that.