I am trying to crawl and stand

Sanay can get into a crawling stance but cannot crawl yet. He is also trying to pull up on us, sheets and other things and trying to stand up. As he pulls up, he can also come to a sitting position. He loves to walk with support. Sanay is getting 4 teeth - the upper and lower central incisors. He is getting a little fussy due to teething but he is doing well. He had his 9 months well baby check-up and did very well. He weighed 21.6 pounds and is 29.5 inches long. He got 2 shots and got some blood-work done and was a very brave boy. He only cried for a few seconds and then tried to play and smile after that. He makes mommy so proud!