I have got a son who is almost three.
He is also very particular about who does what, for example, he likes his dad to help him with his cereal in the morning and me to do his teeth and get him dressed. If we try and alternate those roles then he goes a bit crazy.
It is only only over the last 3 months that he has started sleeping through. Prior to that he would be up at least twice, sometimes three times, every night. He would go to bed at 7pm and wake up at about 6am, with his wake-ups inbetween. He now sleep through from 7pm to 6am.
He also had a phase where he was very weird about textures - in particular, he would go crazy if I tried to put something warm on him, for example if I had just taken some socks off the radiator and started putting them on him. He would get hysterical, scream at me to take them off and be really distressed - his response did make me think that something was ‘wrong’. He doesn’t do that anymore though.
He also gets very distressed if his hands get dirty with either food, paint, sand etc.
I just think some children have some odd quirky behaviours that they just grow out of.
Saying that, my 6 year old son still has weird quirks about textures, for example he hates wearing clothes as he says everything is uncomfortable on his skin. He also really, really hates it if I wet my hands and then use them to try and rearrange his bed-head hairstyle. He goes crazy, runs away and begs me not to do it because he “doesn’t like the feel of it” and he often cries about it too.
Definitely speak to your HV or GP if you are really worried but sometimes children just do strange things.