I my humble opinion. This is what I believe.
I lost my wife 15 months ago. First the one year rule comes out of Victorian England. It is not a law. It is cultural only, it may work for some for others it does not. Grief is very individual and follows different paths for all of us.
Two, well meaning folks that have not walked in your shoes, have zero idea what they are talking about. So do what is in your heart of hearts, listen to you inner voice. not to others think you should do or not do
I have no opinion on whether you should go for the trailer or not. I can only relate what my thoughts were after loosing my wife.
I thought long and hard about the trailer idea, " preferably parked next to a bar". But in the not so long run I concluded I would be very miserable living alone. Others do fine alone, but I am just not built to do that.
So I reengaged, went back to work took care of business and so on. For me it was a wise choice.
Keep the faith, choose to continue to live, it will get better. Take Care