Analysing one of your own games with a coach is one of the most important parts of work for a coach. To maximize the analyse-training effect you should always annotate your games before giving them to your coach. The reason for this is, that it makes it more easily for your coach to spot your weaknesses and therefore give you the right material to study. (very important if you don't live commentate all of your games in a meeting while going through them)
For your rating i would prefer a split of training time like this:
- 65% tactics
- 10% openings
- 15% endgames
- 10% positional & strategical plans
In the beginning this will often look some random topics with a lack of structure, but normally it isn't. (the percentage ratio will change when you get better)
From my coaching experience the book "How to Reassess your Chess" is far too complex and difficult to understand for your level. (i would leave it aside)
Also don't hesitate to ask your coach about topics you find uncomfortable. (e.g. how to play against this opening, how should i behave in positions like this one, etc.) -> He will get a feeling in which topics you are good or need additional training.
For saving time you should do tactic puzzles always on paper/in your mind, because in tactic puzzles it often takes more time to set up the board than to find a solution.