Do not worry. Do tepid sponging in between Crocin do a covid antigen test. And cbc crp urine if temperature persists and increase.

So as long as child is feeding well and active nothing new has to be done specifically Just give symptomatic treatment What you are doing is absolutely correct. If there is more cough then give a cough syrup mucolite ls or something Isolate urself with the baby. If you are symptomatic or child becomes lethargic and dull and not feeding well we may test child and yourself with covid rtpcr. Again no need to panic children are affected but mildly so just isolate and continue whatever treatment you are doing