Good grief...he's only 6 months

So yesterday in the midst of a tired fit my mom set Jacob in his crib (at her house) and he started playing. She turned around and he had pulled to his knees. This morning I sat him in the crib again to see what he would do....

After this he got excited let and let go fell back and bonked his head. After lots of kisses from mommy he was fine and wanting to chew on something else. Only good thing is that for now he can only do this from the sitting position. He doesn't know how to go from lying to sitting so we are safe for a while....He is doing ok with the ear infection. Mornings and days he's fine but late afternoon and evenings get rough.