I think I made a mistake buying Tuft and Needle Mint

I needed to change my old matress( it was an ikea Sultan) and I after trying different mattresses for some reason got the Tuft and Needle mint because it was recommended to side sleepers and not motion transfer.

I am not in love with the mattress, I have been sleeping on it for 5 days and people is telling me that I need to try it for longer because it needs to break in.
I am 5โ€™ 7" and weight 170 pounds and side sleeper most of the times.

My 6 year old gets in my bed almost every night , he moves a lot and I donโ€™t want to feel him moving , motion transfer is important for the matress too.
I have neck and shoulder pain( less with the mint).

I liked when I tried the Puffy soft ,the Brooklyn Spartan soft and the Helix sunset luxe version.
I am also looking at Layla hybrid and after finding this website ez mattresses but I never tries a latex matress before.

Thanks