I picked my pup up at 7 weeks. He is now on week 8 (8/20/2020) and weighed in at 7lbs. Mind you, i weighed him by jumping on my scale without him and then checking how much it shows with me holding him. Should i be concerned? I have seen many forums and what not that says Males weigh more around 11-20lbs at 8 weeks so my pup doesnt even hit the minimum. How can I help catch him up?