Your dog turned 2 last month. The pulling, the ignoring and the jumping are all still here, and the internet keeps talking about windows closing. Nothing has closed. You are at the far edge of adolescence, which is usually where this gets easier.
The brain is maturing, not broken
Adolescence runs roughly from 6 to 24 months, and larger dogs generally sit at the later end of that range. Dogs show reduced responsiveness to the cues of the person who raised them around the onset of adolescence. That responsiveness returns later in the stage, and at 2 years old you are on the returning side of it. Reward-based training has been associated with higher reported responsiveness and fewer problem behaviours, at any age.
The honest part: the history counts
A behaviour rehearsed 1,000 times over a year is not undone in a fortnight. Replacing a practised habit takes longer than building a new one from nothing. So expect the same sequence a 9 month old dog would get, with more repetitions and a longer runway. The advantage is real too, because your 2 year old sleeps better and concentrates longer than they did at 9 months old.
Where to start this week
Pick 1 thing. The most expensive problem in your week, not the longest list.
Stop the rehearsal first, with a long line, a baby gate or a quieter route, so the old version is not being practised.
Drop the difficulty to a level your dog can answer today, even if that feels embarrassingly easy.
Train 3 sessions of 3 minutes a day rather than 1 of 30, and pay far better than you think you need to.
Write down what your dog managed each day. Across 3 weeks the numbers show movement that the feeling does not.
Add the second problem only once the first has held for 2 weeks.
Behaviour change is built from management plus reinforcement together. Skipping the management is the usual reason the last attempt felt like it went nowhere. We will not tell you how long your dog will take, and nobody honest will. We will tell you the direction and the method, and both of those hold at 2 years old.
Safety note
Some of this is not a training problem, and starting late does not change that. If aggression toward people or dogs, any bite, or severe fear or anxiety is part of the picture, stop here. Contact your veterinarian and ask for a referral to a veterinary behaviourist. Sudden behaviour change warrants a veterinary examination, and pain frequently presents as a change in behaviour rather than as obvious lameness.
Today's version, in one line: name the problem that costs you most, and do 3 minutes on its easiest version tonight.