Autism - tissue salt or homeopathic remedies

I have a son that is almost 6 years old, (He is getting 6 years in August) that was diagnosed with autism.

He had a regressive autism when he was almost 3 years old and woke up one day after interrupting breastfeeding with strabismus and anxiety.

He was diagnosed by our naturopath at that time as pans and lab results from arimin labs showed lyme.
We treated him with antibiotics after 4 monthsand we saw huge improvements. We stopped the abx after 3 months and he started slowly to regress.

He was playing with toys and drawing and better eye contact when he was on abx. We decided to do biomedical treatment since then but he has gone through periods of getting better then regressing again. He is fully vaccinated until he was 2 years old.
Right now we have him only on tissue salts (Kali mur, Kali sulf, nat phos and Kali phos one pellet twice a day) and half capsule of lions mane (mashroom). He was in many other supplements before that we have stopped.

Current symptoms that we are having is the need to be held all the time. We hold him when we put him to sleep and several times during the day, rocking and singing to him, otherwise he cries. He wants us to sing him wheels all the bus all the time. Difficulties with transitions. Mood swings and crying out of nowhere. He gets covered in sweat when he has these mood swings like he is experiencing hot flushes. He wants pressure in his hands and feet and knees.

Wants to be on a swing and he likes movements, like being on a bus. Has OCD and ADD, like takes time to answer questions and speaks to himself. Has poor social skills and does not like to play with other kids. When we go on a park, does not want to do anything else than stay all day on the swing. Likes numbers and loves to create rhyming sentences. Is very good at remembering what he hears and repeats it during the day. He is fast learner, used to be better but recently not that much. Recognized number and shapes and colours and wants things to be a certain way. Like he wants us to clean the plate once he finishes or if we do something he wants us to do this exactly the same way next time. Has rigidity to routines.

He is verbal but not age appropriate, spends lots of time repeating things that he has heard during the day. Can follow instructions and speaks about his wants and needs and if he has pain or if something is bothering him. Is able to put words he heard on a context.
Right now does not want to do anything. He used to like books and play with toys. He refuses to write or draw or do anything else. He loved that we read him books (does not like that anymore) Even if we give him an ipad cannot focus. We are having problems with focus recently.

He is also getting very thin and seems like he is not absorbing nutrients though he eats well. He likes deep pressure. Put things in his mouth (this comes and goes) and touches his privates (this is a symptom that comes and goes as well).
Right now he is refusing certain foods he used to love like chicken and we really have to trick him to make him eat it. He is irritated and sometime will wake up from sleep irritated. Wants to remove the clothes and stay naked in the house sometime.
He is small and thin and looks like he is 3 or 4 years old and not almost 6.

My question is: The combination of these tissue salts Kali phos, Kali sulf, Kali mur and Nat phos (1 pellet of each twice a day Hyland’s brand )– Is this combination of tissue salts a a good one for him based on his symptoms? His naturopath thinks that we cannot introduce mag phos and calc phos for now.

Or even better, what combination of tissue salts would better fit with his symptoms? What dosage?
Thank you so much!
[Edited by Lola1234 on 2021-07-12 17:40:15]