uh yeah, but you not gonna want it particularly. its just volume. volume means a lot of reps
start at a level you can easily achieve and do it for 2 weeks. Like 5 sets of 2 situps. giving little games and do it 5 or 6 days a week.
Make it so easy that you can always succeed, it is never hard to finish or mentally convince you to give up. easy sets are easy to do many times, so you can get your numbers up.
pick it so small you can fail and do it 6 days a week for 2 weeks. THEN start increasing.
look out for the time your body feels weary and you dont want to even bother, you feel exhausted thinking about it, that is body telling you to do less, so you been going too hard, do less. it is very easy to get super motivated and do far too much to be sustainable. you want easy and sustainable. you MUST do things regularly for it to make a difference. so one-off hero efforts are pointless.
occasionally do the max situps you can to see what the number is.
for situps you want to be thinking of total volume in terms of 1000's, to do this easily, start at much smaller numbers, like 10 a day total, work up to 100 a day total and at quantities that aren't hard to complete. easy sets are easy to do many times, so you can get your numbers up.
when your motivation gets burnt out and you exhausted mentally, you gone too hard, cut it back.