ADHD related. Impact. please help.

I need help to find out if my 4y 8m old boy has ADHD. In my growth scan when I was pregnant with him, it showed he was IUGR. Although nothing was mentioned in further scans or hospital discharge reports. Because of Covid and lockdown, I am unable to visit a doctor physically and get him assessed.. i am putting down a few things which made me think if there is anything wrong with him. 1. He cannot sit still even for 3-4 minutes, he needs to say/do something 2. Doesn't have patience with jigsaw puzzles or blocks or games like ludo. 3. Cannot write without support. Handedness is still unclear. 4. Most of the time running around, jumping or speaking. Except when he is tired. I dont know if these are symptoms of ADHD or he is just a frustrated restless child due to the lockdown impact. Please help.