That fella looks pretty pissed on your pic Tim :/ ouch, poor chap
Good news is your pops appears to be pretty solid and that alone gives me the feeling that he will only get much better with time I'm sure. He also appear to be in good hands with his two sons being there
Lucky dude on that part
Relative had similar symptoms here. Memory... some, in fact a lot comes back so tell him not to panic on that. Takes time
You're the boss now, take care of everyone and yourself mate