Congratulations on many things. Women's racing is often much more difficult because of smaller fields and too wide a variation in ability within a given race. Way easier to hide and finish when the field is 100 in a pan flat 4 corner office park crit than the same race w 20 people, w nowhere to hide from the wind and basically asking many female racers to just ride solo or almost solo..tough stuff.
Fat can't be targeted, so if you feel you are heavier than you want to be, definitely something complicated, has to be true first of all and that needs to be determined by a team. Starting with a doctor, then some help on nutrition, so you are getting the right amount and type of calories to go slowly and safely down in weight. And sprinkle some coaching in there so while you are achieving some physical thing on the scale, you also meet or exceed your goals on the bike.
Journaling can really do a bunch to fix things. Know things about yourself, when you are awake and asleep.
Start whenever you want, how much did you sleep? And what did do while you were awake? And what did you eat to achieve it?
Good set up is to pre cook and prepare healthy meals for half or as much of the week, on the weekend so you and your plans don't crash and burn because you got slammed, car problems, boss wants more, car or bike problems, ect..and you make bad nutrition choices, gotta have, at the ready, high quality fuel and stick to it..
See where you are later in the year w slight increases possibly in mileage and mileage quality. Quality is key because the calendar has lots of short, fast crits, and few big selection races where you are asked to make10-30 minute climbs..
It's going to come, don't worry, big percentage of bike racing is wanting it and it sounds like you do. Stay in the fun as long as possible. If you find yourself around professional CAT5s or 4s get away from that level of serious.
I live by old school rules of upgrading..10 points..3 for a win..2 for second..1 for third.. Zero for participating. 40 counts as a qualifying field size. So yes a win is a win.. But standing on the podium when there was 5 in the race.. well you see what I mean.
Sounds like you have goals and that is amazing.. Write them down and what you are doing on and off your bike to get there.. and the only other thing is that bicycles and bike equipment are generally very good if not great.. Don't buy a bunch of junk. Instead your training and racing will demand certain things, listen to your training and act accordingly. That is coming from a guy that never ever never needed an aero time trial helmet but I bought some.. Yep more than one..