I started reta, i tend to split doses and also start slow. Started at 0.3mg 3 times a week, didnt feel anything first week, increased to 0.5mg 3 times a week, and ended up with allodynia by the end of the week. Didn't realise it was the reta, kept going with it for an additional week. Allodynia got a little worse over the additional week.
When i cut the reta, it went away fully over a week and a bit.
I have tried sema, tirz, and combo of sema/cagri which is what i use if i want a break from food noise nowadays.