Hi and welcome

with your little guy being so young it really could be what are known as transient tics, which frequently resolve completely without any intervention

some parents have noted tics after vaccinations, or strep infections ( condition called PANDAS), and also with food allergy (especially dairy and/or gluten, as well as artificial chemical food additives) or environmental allergies etc, along with many other "tic triggers"



also, kids who have been on a lot of antibiotics frequently have candida ("yeast") infection in their gut, and that has been noted to also be a tic trigger. Eradicating the infection can often resolve the tics.

so even tho the tics you describe do occur in TS, yet that doesnt mean your little one has TS. At his age, most neurologists would likely suggest waiting before giving a diagnosis

TS is usually diagnosed after one year of both motor (movement) and vocal tics continuing, with characteristic waxing and waning (ie tics come and go and usually different ones)

there is a good informal survey on triggers for TS tics at Latitudes, and many parents whose kids tic, but dont have TS, have also reported how these often trigger their kids' tics too
http://www.latitudes.org/articles/finding_triggers.htm

hope that helps. I know it is hard not to worry about our kids when they exhibit things, but do be encouraged that for the vast majority of young kids who show tics, these are transient and do seem to go away as they get older

still, no matter the reason for the tics, it is always a good idea to be proactive, as you are being, and try to learn as much as you can and do what you can to try to eliminate any potential tic triggers