Trademark Dispute — someone copied my website design

Quick background on my situation — any input appreciated.

someone copied my website design. I've been dealing with this for about 16 weeks now and the situation isn't improving.

This involves content I created over the past 14 months. I do not have documentation proving my ownership and timeline.

Should I hire a lawyer for this or try to handle it myself?

I've seen this play out several times in my field.

I ended up filing with the appropriate government agency, which cost about $4-8 but saved me a lot more in the long run.