Proprioceptive discrimination 3 yr old

[Ellebel]

My son is nearly 3 and has recently been diagnosed with suffering from Proprioceptive discrimination. Reading up on it it makes sense- we’ve had endless problems with him vigorously squeezing my hands, friends, baby brother which is a continues problem. I used to think he was trying to hurt people but now realise it may be out of his control. Sometimes it seems like he wants to hurt- like in response to a peer taking his toy, but othertimes it can feel like he’s trying to be affectionate and doesn’t understand the negative reaction. We have also had long standing trouble with biting which improved for a few months but seems to have returned.
We seem to have weeks where it’s not so bad. And then weeks where it’s relentless. Impulsive behaviour, endless incident reports from nursery about him lashing out at other children, squeezing their faces. I wondered if there can be triggers that make it worse? Or if there is likely something else occurring here? There’s no obvious reason for change in behaviour like diet/ sleep etc.
We do lots of stretching and pushing with him, have squeezy balls dotted around the house, do endless park trips so he can let off steam.
Aside from this he is a happy sociable boy, amazing language, full of beans and a great sense of humour!
Hoping someone with more experience than me has any advice/ tips? We would like to get him OT sessions but atm it’s a bit too expensive for us.
Many thanks

Sounds like it's a sensory processing need? Does he have other sensory processing challenges? They can all feed into each other making him feel dysregulated then his solution to that may be squeezing etc. Try lots of play with playdough and other squishy things. You could try 'hotdogging' wrap him tightly in a thin blanket and squeeze him all over, a sensory sock (like a big sack you get in and can push against) might be helpful, monkey bars, wheelbarrow walking, trampoline, vibrating toys and try and do regular bursts of these things throughout the day for 5-10 mins at a time to keep him regulated.

Thank you @FloofyBird this is really helpful and will def give suggestions a go. I’m not sure RE other sensory challenges. He doesn’t seem to but I am very new to all this and still learning. He does have a terrible temper at times, often unprovoked which nursery have flagged to us and we are trying to work out what is causing it. He’s still so young it’s often hard to tell what is normal toddler behaviour and what is something more!